solve it for class 8
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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
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answer:
explanation:
- 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)
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