Question

the perimeter of a rectangle is x³ - 16x² + 8x +99 if one of the side is 19x²-19
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Answer 1

let the breadth be x

2 ( l+ b) = perimeter

2 ( 19x² - 19 + x) = x³ - 16x² + 8x + 99

38x² - 38 + 2x = x³ - 16x² + 8x + 99

( transpose on other side)

x³ - 16x² - 38x² + 8x - 2x + 99 -38 = 0

x³ - 54x² + 6x + 61 = 0

now you can solve bro / sis