Question

Factor completely x 3 +2x 2 ­-15x

A. x(x-3)(x+5)
B. -3x(x+5)(x+1)
C. 5x(x+1)(x-3)
D. x(x+5)(x+3)

Answer 1

x^3 +2x^2 -15x = x(x^2 +2x -15) = ?

do you can continue it ?

Answer 2

for this inside parentheses you need getting two integers with sum = 2 and product equal 15

hope this will help you

Answer 3

oh sorry product equal minus 15

Answer 4

x^2 +2x -15 = x*x +5x -3x +5*(-3) = x(x+5) -3(x+5) = (x-3)(x+5)

ok. ?

Answer 5

sorry in the front pf parentheses i missed the x

Answer 6

so will be x(x-3)(x+5)

Answer 7

so choice A. is right sure

Answer 8

do you understand it now sure ?

Answer 9

Yes thank you so much @jhonyy9

Answer 10

was my pleasure

and anytime

good luck

bye bye