27
x2+8x = -3x2+5 4x2+8x-5 = 0 (2x+5)(2x-1) = 0 x = -5/2 or x = 1/2
That factors to (x + 5)(3x + 2)
2 + 5 + (3 x 2) + 4 +2 + 17 + (2 - 13) + 5 = 30
53
27
x2+8x = -3x2+5 4x2+8x-5 = 0 (2x+5)(2x-1) = 0 x = -5/2 or x = 1/2
That factors to (x + 5)(3x + 2)
3x2+13x-10 = (3x-2)(x+5) when factored
2 + 5 + (3 x 2) + 4 +2 + 17 + (2 - 13) + 5 = 30
23 if you mean (12-3)x(2+5)
53
x3 + 3x2 - 9x + 5 = 0 has roots of -5,1 and 1. CHECK : x3 + 3x2 - 9x + 5 = (x + 5)(x - 1)(x - 1)
(3x2)+5=11
(x + 1)(3x + 5)
f(x) = 3x2 + 5x + 2fprime(x) = 6x + 5
2 + 5 + 9 + 12 + 16 = 44/5 = 8.8