Question

solve it for class 8 ​

Answer 1

Step-by-step explanation:

1)49a²-36=(7a)²-(6)²=(7a-6)(7a+6)

2)9a²b²-16=(3ab)²-(4)²=(3ab+4)(3ab-4)

3)4x²/9-9y²/16 =(2x/3)²-(3y/4)²

=(2x/3+3y/4)(2x/3-3y/4)

4)(m-4)(m+4)

5)(m²+4)(m²-4)

6)(y+3)(y-3)

7)(x²+y²)(x²-y²)

8)(x²+16)(x²-16)=(x²+16)(x+4)(x-4)

9)(5x-5)(5x+5)

10)(4x²-25y²)(4x²+25y²)

40 thanks please

Answer 2

answer:

explanation:

1. 49a²-36

• (7a)²-6²
• (7a+6)(7a-6) [:.a²-b²=(a+b)(a-b)]

2.9a²b²-16

• (3ab)²-4²
• (3ab+4)(3ab-4)

3.4x²/9-9y²/16

• (2x)²/3²-(3y)²/4²
• (2x/3)²-(3y/4)²
• (2x/3+3y/4)(2x/3-3y/4)

4.m²-16

• m²-4²
• (m+4)(m-4)

5.m⁴-16

• (m²)²-(2²)²
• (m²)²-4²
• (m²+4)(m²-4)

6.y²-9

• y²-3²
• (y-3)(y+3)

7.x⁴-y⁴

• (x²)²-(y²)²
• (x²+y²)(x²-y²)

8. x⁴-256

• (x²)²-16²
• (x²+16)(x²-16)

9.25²x²-25

• (25x)²-5²
• (25x+5)(25x-5)

10.16x⁴-625y⁴

• (4x²)²-(25y²)²
• (4x²+25y²)(4x²-25y²)