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OpenStudy (anonymous):
(1 - 7x)(1 + 9x)
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mathslover (mathslover):
\[\huge{(a+b)(c+d)=a(c)+a(d)+b(c)+b(d)}\]
Parth (parthkohli):
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Parth (parthkohli):
The key to success is \(\Huge \text{F.O.I.L}\)
Parth (parthkohli):
\( \color{Black}{\Rightarrow (1 - 7x) ( 1+ 9x) = 1( 1+ 9x) -7x(1 + 9x)}\)
Parth (parthkohli):
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OpenStudy (anonymous):
@armidadiaz70 use wat maths told u
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