Complete the gap

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(a+2b)²-(a-2b)*(a+2b)-(3a-b)²=???

Guest May 6, 2015

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Best Answer

(a+2b)²-(a-2b)*(a+2b)-(3a-b)² = ???

$$\small{\text{
$
(a+2b)^2-(a-2b)*(a+2b)-(3a-b)^2 = 7b^2+10ab-9a^2
$}}$$

heureka May 7, 2015

heureka · Answer 1 · 2015-05-07T05:02:28

(a+2b)²-(a-2b)*(a+2b)-(3a-b)² = ???

$$\small{\text{
$
(a+2b)^2-(a-2b)*(a+2b)-(3a-b)^2 = 7b^2+10ab-9a^2
$}}$$