plz friends answer my questions it's urgent plz help me
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plz friends answer my questions it's urgent plz help me
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Answer:
tell me question no. or all questions I have to answer
Answer:
1.i.(x+8)(x-10)
(x+a)(x-b)=x²+x(a-b)-ab
x²+x(8-10)-80
x²-2x-80
ii. u can solve this way
2.9/25y²-49/4z²
a²-b²=(a-b)(a+b)
(3/5y)²-(7/2z)²
(3/5y+7/2z)(3/5y-7/2z)