Algebra

Can anyone please check the following for me please

Expand (5 - 2x) Squared

(5 - 2x) (5 - 2x)

5 sqrd + 5 X - 2x + -2x x 5 + -2x X -2x

so

5 Sqrd - 10x - 10x + 4X

= 5 sqrd + 4x

Am I right..thank you :-)

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
  1. No, you should use FOIL
    F - multiply the Firsts
    O - multiply the Outers
    I - multiply the Inners
    L - multiply the Lasts

    so (5 - 2x) (5 - 2x)
    = (5)(5) + (5)(-2x) + (-2x)(5) + (-2x)(-2x)
    = 25 - 20x + 4x^2

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math.

    1. Find the area of the given circle. Round to the nearest tenth. *theres a picture of a circle and the radius is 3.5* A. 22.0 cm *squared* B.38.5 cm *squared* C. 11.0 cm *squared* D. 42.8 cm *squared* 2.Find the circumference of

  2. Math

    Find the surface area of the cylinder. Use 3.14 for pi. The cylinder's radius is 2 and the height is 15. A)100.4 cm squared B)97.43 cm squared C)36.29 cm squared*** D)33.14 cm squared

  3. Math

    Find the lateral area of the cone. Use 3.14 fo pi and round result to the nearest whole unit. radius: 15cm Side unit: 28cm Please help!! A) 1,319 cm squared B) 2,639 cm squared C) 707 cm squared D) 2,026 cm squared is the answer

  4. ALGEBRA WORD PROBLEM! HELP!

    And if a length of a rectangle is 3 more than twice the width and the are is 90 cm squared than what are the dimensions of the rectangle? The width of the rectangle is 43.5 and the length of the rectangle is 87. All together when

  1. Mathematics

    Find the surface area of a conical grain storage tank that has a height of 30 meters and a of 16 meters. Round the answer to the nearest square meter. Options: 2365 m squared 1762 m squared 981 m squared 780 m squared

  2. algebra 1 I NEED HELP!!

    the bottom of a 25-foot ladder is placed 7 feet from a wall. How far will the ladder reach up? Since the ladder, wall, and ground form a right triangle, you can use this formula: A squared + B squared = C squared A = 7 feet C = 25

  3. Geometry

    Find the ratio of the perimeters for each pair of similar figures. 1. 2 regular pentagons with areas 50 inches squared and 162 inches squared. 2. 2 circles with areas 27π inches squared and 48π inches squared.

  4. GEOMETRY

    4. Find the area of the irregular figure. It looks like it can be divided into 4 shapes. A rectangle,2 triangles, and a square. It is labeled with the numbers 4,16,25,10, and 15. My answer choices are: 432 units squared 438 units

  1. Math

    find the surface area of the rectangular prism. inches are:3 ,2 and 4 those are inches for height length and width A. 60 in. (squared) B. 84 in. (squared) C. 26 in. (squared) D. 52 in. (squared) ***** Please check this for me!

  2. math

    Solve each equation and leave the answer in simplest radical form. x squared+6x-9=0 n squared-2n+2=5 3y squared-4y-2=0 I never learned how to do this. Can you help me?

  3. Math/Geometry

    i need help figuring out how to find the area of this trapezoid. two sides have 8cm, another one has 10cm, and the last one has 16cm. Also, there is a dashed line inside of the trapezoid that is 7cm. A. 8 cm squared B. 62 cm

  4. calculus

    What is the area of the region bounded by the lines x=1 and y=0 and the curve y= x(e^x^2)? A. 1-e units squared B. e-1 units squared C. (e-1)/2 units squared D. (1-e)/2 units squared or E. e/2 units squared if you can show me how

View more similar questions or ask a new question.