Question

find roots of x2-8x+15 using quadratic formula​

Answer 1

Hey mate, Here's the answer....

$x ^{2} - 8x + 15 \\ {x}^{2} - 5x - 3x + 15 \\ x(x - 5) - 3(x - 5) \\ (x - 5)(x - 3) \\ x-5=0 or x-3=0 \\ x=5 or x=3$

Hence 3 and 5 are the roots of the Quadratic expression

Hope it helps!!!

Answer 2

Answer:

5 and 3

Step-by-step explanation:

x2-8x+15=0

x2 -5x -3x + 15=0

x(x-5) -3(x-5) =0

(x-5)&(x-3)=0

thus x= 3 & 5