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transform quadratic function in standard quadratic form. identify a,b,c 1.) f(x)=(x+1)^2+(x-1)^2
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f(x)=2x^2+0x +2 a=2 b=0 c=2
need solution how did you get that answer?! solution please?
ok come to twiddla
just expend the two and combine the similar ones
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solution please .
come to twiddla plz
f(x)=(x+1)^2+(x-1)^2=x^2+2x+1+x^2-2x+1=2x^2+2
but wait !
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formula for expansion (a+b)^2=a^2+2ab+b^2 (a-b)^2=a^2-2ab+b^2
i think u will be able to solve it by these formulas
\[f(x)=(x+1)^2+(x-1)^2\] \[f(x)=x^2+2x+1+x^2-2x+1\] \[f(x)=2x^2+2\] tada
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