Question

a. x²-2x-15=0
b. 2x²+12x+10=0
c. 3x²+10x+7=0
d. x²-8x+24=0
e. x²+10x-75=0

please answer this for me guyssss

Answer 1

Step-by-step explanation:

1.

${x}^{2} - (5 - 3)x - 15 = 0 \\ {x }^{2} - 5x + 3x - 15 = 0 \\ x(x - 5) + 3(x - 5) = 0\\ (x + 3)(x - 5) = 0 \\ x = ( - 3)(5)$

2.

$2 {x}^{2} + 12x + 10 = 0 \\ 2 {x}^{2} + (10 + 2)x + 10 = 0 \\ 2 {x}^{2} + 10x + 2x + 10 = 0 \\ 2x(x + 5) + 2(x + 5) = 0 \\ (2x + 5)(x + 5) = 0 \\ x = ( - 2.5)( - 5)$

Answer 2

Answer:

hope it helps.

some questions are based on the quadratic formula..