Question

factorise 8a^2 - 22a + 15

Answer 1

heya friend,

split by middle term
 8a^2 - 22a + 15
sum =-22
product=120

(-12,-10)

8a^2-12a-10a+15
4a(2a-3)-5(2a-3)
(4a-5)(2a-3)

4a-5=0
a=5/4

2a-3=0
a=3/2



HOPE THIS HELPS!!!

Answer 2

HI FRIEND

Factorization --> 8a^2 - 22a + 15

While splitting the middle term -

8 x 15 = 120

product => 120

sum => -22

8a^2 - 12a - 10a + 15 = 0

4a ( 2a - 3) - 5 ( 2a - 3 ) = 0

( 4a - 5 ) ( 2a - 3 ) = 0

a = =>5/4 or 3/2

HOPE IT HELPS