Write the perimeter of the rectangle as a simplified polynomial. Then factor this polynomial completely.
7x + 40
x2 + 7x
(2x + 4)(x + 10)
(x + 4)(x + 10)
2(x + 4)(x + 10)
2(x + 7)(x + 7)
2007-07-20 09:16:16 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
2x^2 +14x +14x +80
=2x^2+28x +80
= x^2 +14x +40
= (x+4)(x+10)
2007-07-20 09:24:44 · answer #1 · answered by ironduke8159 7 · 0⤊ 0⤋
Perimeter of a rectangle=2x(Length+Breadth)
so we have
2{(7X+40)+(X^2+7X)}
2{X^2+14X+40}
2{X^2+4X+10X+40}
2{X(X+4)+10(X+4)}
2(X+4)(X+10) ans
2007-07-20 18:16:13 · answer #2 · answered by MAHAANIM07 4 · 0⤊ 0⤋
2 * (7x + 40) + 2 * (x^2 + 7x) =
14x + 80 + 2x^2 + 14x =
2x^2 + 28x + 80 =
(2x + 8)(x + 10)
Or
2x^2 + 28x + 80 =
2 * (x^2 + 14x + 40) =
2 * (x + 4)(x + 10)
2007-07-20 16:22:22 · answer #3 · answered by N E 7 · 1⤊ 0⤋
hmmmmmmmmmm
2007-07-20 16:19:06 · answer #4 · answered by Modest To The Top 3 · 0⤊ 1⤋