Question

factorise : 5x²- 28-12​

Answer 1

Answer:

Thanks for your question...

Your required answer :

Given :

• 5x²- 28x - 12

Solution :

• 5x²- 28x - 12
• 5x² - 30x + 2x - 12

Now take 5x and 2 common :

• 5x ( x - 6 ) + 2 ( x - 6 )
• ( 5x + 2 ) ( x - 6 )

Now zeroes :

• 5x + 2 = 0
• x = -2/5

• x - 6 = 0
• x = 6

Brainliest Please

Answer 2

Correct question :-

5x²-28x -12

Answer:

5x²-28x -12

=5x²-30x +2x -12

= 5x(x-6) +2(x-6)

= (5x+2)(x-6)

$\\\boxed{or}$

If your question is correct then,

5x²-28-12

= 5x² - 40

= 5(x²-8)

= 5[ x²-(2√2)²]

By using identity , a²-b² = (a-b)(a+b)

= 5(x-2√2)(x+2√2)