Monday

January 26, 2015

January 26, 2015

Posted by **Shaw** on Tuesday, June 30, 2009 at 2:47pm.

How do i write an expression in the form ax^2+bx+c for the area of the rectangle?

Given that the area of the rectangle is 294cm^2, determine the value of x and state the dimensions of the rectangle in cms?? want the working so i can do questions like these in the future.

- Math -
**Reiny**, Tuesday, June 30, 2009 at 7:05pmArea = length x width, so

Area = (2x-1)(x+3)

expand this and you got the first part

(did you get 2x^2 + 5x - 3 ?)

now set this equal to 294

2x^2 + 5x - 3 = 294

2x^2 + 5x - 297 = 0

rather than waste time trying to factor this with these numbers, I would use the quadratic formula

- Math -
**Anonymous**, Friday, June 14, 2013 at 2:36pm-594

**Answer this Question**

**Related Questions**

9th grade polynomials - How do you write the expression for the area of the ...

Math - A rectangle is inscribed in a semi circle of radius 2, let x represent ...

Math - The variable W represents the width of a rectangle. The length of the ...

coordinate algebra - The area of a rectangle is found by multiplying the length ...

math117 - The area of a rectangle of length x is given by 3x2 +5x. Find the ...

maths - the length of a rectangle is 3 less than 5 times its width. Write a ...

math - a rectangle is twice as long as it is wide. if both of its dimensions are...

math - the length of a rectangle is x +19 and the width is 6. the length of a ...

Algebra - you can represent the width of a certain rectangle with the expression...

geometry - If the length of a rectangle is twice its width, w, write an ...