What happened to the exponent rule where (a + b)^2 = a^2 + b^2
Unless... unless that is only for (ab)^2
I know that (a + b)(a + b) = a^2 + b^2 + ab + ab
but ugghh this stuff just confuses me.
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(a+b)^2 does not equal a^2 + b^2
(a+b)^2 = (a + b)(a + b) = a^2 + b^2 + ab + ab