Question

a2-2a2-35

Answer 1

it must be : \(\large a^2 - 2a - 35\)

?

Answer 2

the 2a is squared

Answer 3

im sorry i typed the problem wrong the first a is to the 4th

Answer 4

\(\large a^4 - 2a^2 - 35\)

Answer 5

like that ?

Answer 6

yes

Answer 7

and you wanto factor it ?

Answer 8

yes

Answer 9

\(\large a^4 - 2a^2 - 35\)


say \(a^2 = x\),
then the expression becomes :

\(\large x^2 - 2x - 35\)

Answer 10

can u factor that ?

Answer 11

no

Answer 12

i dont think so anyway

Answer 13

\(\large x^2 - 2x - 35\)

Answer 14

find two numbers such that :
product = -35
sum = -2

Answer 15

-5 & 7?

Answer 16

but then I get a +2 instead of -2

Answer 17

try -7 & 5

Answer 18

oh duh!

Answer 19

but is that with the second part being 2a2

Answer 20

yes :) so whats the factored form ?

Answer 21

yup

Answer 22

\(\large x^2 - 2x - 35\)

factors to

\(\large (x-7)(x+5)\)

Answer 23

plugin x = a^2 above

Answer 24

\(\large (x-7)(x+5)\)

\(\large (a^2-7)(a^2+5)\)