Question

Solve this using factoring

a^2 + 8a - 20 = 0

Answer 1

ConfusedStar... try www.wolframalpha.com enter what you just did into that.. easy solve..

Answer 2

ok

Answer 3

(a-2) (a+10)

Answer 4

what happen to the signs?

Answer 5

a=10
a=-2

Answer 6

opps thats a=-10 a=2

Answer 7

a = -10 , 2

Answer 8

(a-10) (a+2) ? this?

Answer 9

(a+4)^2-36

Answer 10

how does -10 became 10?

Answer 11

and 2 became -2?

Answer 12

a^2+8a-20=0
=> (a-2)=0
1 8 -20
2 20
+________ 2
1 10 0
therefore, (a-2) & (a+10+0)
=> a=2 & a=-10

Answer 13

The equation was factored into (a-2)(a+10)=0; This equation can be satisfied by either one of the terms of the LHS being equal to 0. So by equating each equal to 0; we get a=2,-10(a-2=0; a+10=0)