Question

помогите пж!!!!!! срочно

Answer 1

X^2 - 16x + 63 = 0
A = 1, b = -16, c = 63
D1 = -k - ac = 8^2 - 63 = 64 - 63 = 1
X1 = -k - кореньD / a = -8 - 1 / 1 = -9
X2 = -k + кореньD / a = -8 + 1 / 1 = -7

Answer 2

15x^2 + 16x - 15 = 0
A = 15; b = 16; c = -15
D1 = -k^2 - ac = -8^2 -15 * (-15) = 64 + 225 = 289
КореньD = 17
X1 = -k -кореньD / a = -8 - 17 / 15 = 25/15 = 5/3
X2 = -k + кореньD / a = -8 + 17 / 15 = 9/5