Algebra 2

Multiply (x-1)(x^2-2x+4)

Simplify (2+i)(2-i)

  1. 👍
  2. 👎
  3. 👁
  1. Multiply x by each term in x^2-2x+4
    Then multiply -1 by each term in x^2-2x+4.
    Then add up all terms.
    Then collect all the x^3, x^2, x and constant terms. For example, you should have two x^2 terms: -2x^2 and -x^2. Combine them and write them as -3x^2.

    (2+i)(2-i) = 4 - i^2 = 4 - (-1) = ?

    1. 👍
    2. 👎
  2. Just to see if I calculated correctly the first problem = x^3-3x^2+6x-4.
    Then the answer to the other problem is 5.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. algebra

    For questions 1-3, simplify the polynomial. 1. 14x^2 + 4 + 3x - 12x^2 - 3 + 11x 2. 3x^2 + 6 - 2x + 5x - 4x^2 + 9 3. 2x^2 + 6x - 7x + 8 - 3x^2 + 1 4. In the expression -7x - 3x^2 + 5, what is the coefficient of x? Add or subtract.

  2. Math(Please help)

    Simplify each expression. Assume all variables are positive. 1) 3 sqrt2 - 8 sqrt128 I think you subtract the 3 from the 8 but I do not know what else to do. 2) Simplify expression. Answer should have only positive exponents. (8x^3

  3. Math

    Simplify. -2(3)^2 - 8 ÷ 2 + 6 A) -18 B) -16** C) -7 D) 7 Lucy is trying to find a rational number between 3/8 and and 6/7 What would help her to find this number? A)Divide 3/8 by 6/7*** B)Multiply 3/8 by 6/7 C)Convert 3/8 and 6/7

  4. Algebra

    1.Simplify x/7x+x^2 A.1/7+x;where x≠-7 B.1/7x;where x≠0 C.1/7+x;where x≠0,-7 D.1/7**** 2.Simplify -12x^4/x^4+8x^5 A.-12/1+8x;where x≠-1/8**** B.-12/1+8x;where x≠-1/8,0 C.-12/9x;where x≠0 D.-12/9 3.Simplify

  1. Algebra

    Simplify 1/r=1/x+1/y Multiply both sides by rxy. Then simplify. I will be happy to check your work. That is as compact and simple as the relationship can be written. Are you looking for an explicit formula for x, y or r?

  2. Math

    Multiply and simplify (x-7)^2

  3. Matt

    Multiply and then simplify the following expression: (2t + 1)(t - 3)

  4. algebra

    Please help: Multiply and simplify: (5sqrt:5 - 10sqrt:3)(2sqrt:5 + 4sqrt:3)

  1. Algebra

    Solve S=a/(1-r) for r S = a/(1-r) Multiply both sides by 1-r S*(1-r) = [(1-r)*a]/(1-r) Simplify S*(1-r) = a Multiply terms on the left. S - S*r = a Subtract S from both sides. S-S*r - S = a - S Simplify -S*r = a - S Multiply both

  2. Distributive property

    How would I multiply these expression? 6(h-4) -3(x+8) -10(-a+5) PLease and thank-You Multiply the coefficient (outside the parentheses) by each term inside the parentheses. For example, 6(h-4) = 6h - 24 You do the others do you

  3. Math anxiety!!!

    Multiply and simplify by factoring. Assume that all expressions under radicals represent nonnegative numbers. ∛(y^13 ) ∛(¡¼16y¡½^14 ) Am I supposed to add the exponents and multiply the little 3's?

  4. Algebra 2/Trig

    I've done every other single question besides this one. (There was 12). I'm stumped and would really appreciate some help! I have to simplify this: 5/3sqrt(3-4) I am not sure if you have to conjugate the denominator and multiply

You can view more similar questions or ask a new question.