Question
If $a = 2, b = –2$ find the value of $a^2+a b+b^2$
✓
Answer
$=a^2+a b+b^2$
$=a^2+a b+b^2$
$=(2)^2+(2)(-2)+(-2)^2$
$=4-4+4=4+4-4$
$=8-4$
$=4$
$=a^2+a b+b^2$
$=(2)^2+(2)(-2)+(-2)^2$
$=4-4+4=4+4-4$
$=8-4$
$=4$
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