factorise the following expressions a) 8x²-14x-9 b) (2a+2b)²+8(2a+3b)+15
Answers
Answered by
6
Step-by-step explanation:
8xsquare - 18 x + 4 x - 9
2x(4x-9) 1(4x-9)
(2x+1) (4x-9)
Attachments:
Answered by
4
Answer:
a. 8x²-14x-9=0
8x²-18x+4x-9=0
2x(4x-9)+1(5x-9)=0
(4x-9)(2x+1)=0
x=9/4, -1/2
Similar questions