Question

Those who will give right answer I will mark it as brainlist and those who will give wrong answer I will report himand the name of the chapter is factorisation​

Answer 1

Answer:

hope it helps you ❣️❣️❣️

Step-by-step explanation:

1.

see in picture

2.

Let p+ q = x

- 5x^2 + 6x + 8

= - (5x^2 - 6x - 8)

= - ( 5x^2 - 10x + 4x - 8)

= - { 5x(x-2) + 4(x-2) }

= - (5x+4)(x-2)

= - {5(p+q) + 4}{(p+q) - 2}

3.

( x -2y )² - 6( x - 2y ) + 5

Let ( x - 2y ) = a ----( 1 )

= a² - 6a + 5

= a² - a - 5a + 5

= a ( a - 1 ) - 5 ( a - 1 )

= ( a - 1 ) ( a - 5 )

Put a = x - 2y

= ( x - 2y - 1 ) ( x - 2y - 5 )

4.

Let (2x - 3y) = a

=> 7+ 10a - 8a^2

=> - [ 8a^2 - 10a - 7]

=> - [ 8a^2 - 14a +4a - 7]

=> - [ 2a(4a - 7) + 1(4a-7)]

=> - [ (2a+1)(4a-7)]

=> - [ { 2(2x-3y) +1} { 4(2x-3y) - 7}]

=> - [ ( 4x - 6y +1) (8x - 12y - 7)]

=> - (4x-6y+1)(8x-12y-4)

=> ( 6y - 4x - 1)(8x-12y-4)

Answer 2

1. I will do only one not full
2. See this sum and do yourself till you given
3. I hope you understand
4. please mark me as brainlist
5. because you are are intelligent