Question

Factorise 7V2x² - 10x – 4v2​

Answer 1

Answer:

7

2

x

2

−10x−4

2

7

2

×4

2

=56=14×64

(14−4)=10

so, we split 10 as (14-4)

⇒7

2

x

2

−(14−4)x−4

2

⇒7

2

x

2

−14x+4x−4

2

⇒7

2

x[x−

2

]+4[x−

2

]

⇒

[7

2

x+4][x−

2

]