Question

Factorise (d) 4x2 – 9x - 9​

Answer 1

Answer:

Thanks for your question...

Your required answer :

Given expression :

• 4x² - 9x - 9
• 4x² - 12x + 3x - 9
• 4x ( x - 3 ) + 3 ( x - 9 )
• (4x + 3 ) ( x - 3)

For finding zeroes :

• 4x + 3 = 0
• x = -3/4

• x - 3 = 0
• x = 3

Brainliest Please

Answer 2

Answer:

(4x + 3) (x - 3)

Step-by-step explanation:

Question

• Factorise (d) 4x2 – 9x - 9

By using splitting middle term method we factorise,

$\tt \implies {4x}^{2} - 9x - 9 = {4x}^{2} - 12x + 3x - 9 \\ \tt = 4x( x - 3) + 3(x - 3) \\ \tt \red{= (4x + 3)(x - 3)}$

Another info:-

• In splitting middle term method, we split the middle term ( -9x)