Question

MEDAL given work two problems out pleaseee 1. x^2- 8x -7=0 2. x^2 -3x=40

Answer 1

1 .x²-8x-1 = 0

Use quadratic formula: a = 1, b = -8, c = -1
x = [-b±√(b²-4ac)]/(2a)
x = {-(-8)±√[(-8)²-4(1)(-1)]}/[2(1)]
x = {8±√[(64)+(4)]}/2
x = [8±√(68)]/2
x = [8±2√(17)]/2
x = 4±√(17)

Solutions: x = 4±√(17)

Answer 2

im sorry that's wrong @NateR

Answer 3

K