Question

Find the roots of the following quadratic equation x2 -3x – 10 = 0 : The roots are ……. and ……... *
(A) -2, 5
(B) 2, -5
(C) 2, 5
(D) -2, -5

Answer 1

Answer:

x²-3x-10=0

x²-(5-2)x-10=0

x²-5x+2x-10=0

x(x-5)+2(x-5)=0

(x-5)(x+2)=0

x-5=0,x+2=0

x=5,-2

(A) is the correct answer