Interactive practice questions
Which of the expressions below is equivalent to $\left(a+b\right)\left(a-b\right)$(a+b)(a−b)?
$a^2-b^2$a2−b2
A
$a^2+b^2$a2+b2
B
$a^2+2ab+b^2$a2+2ab+b2
C
$a^2-2ab+b^2$a2−2ab+b2
D
Easy
< 1min
Expand the following:
$\left(m+3\right)\left(m-3\right)$(m+3)(m−3)
Easy
< 1min
Expand the following:
$\left(x-7\right)\left(x+7\right)$(x−7)(x+7)
Easy
< 1min
Expand the following:
$\left(v+\frac{1}{7}\right)\left(v-\frac{1}{7}\right)$(v+17)(v−17)
Easy
1min
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