17. Further Algebra (Extended)
iGCSE (2021 Edition)
17.01 Binomial expansions
Interactive practice questions
Which of the expressions below is equivalent to $\left(a+b\right)^2$(a+b)2?
$a^2+b^2$a2+b2
A
$a^2-2ab+b^2$a2−2ab+b2
B
$a^2-b^2$a2−b2
C
$a^2+2ab+b^2$a2+2ab+b2
D
Easy
< 1min
Which of the expressions below is equivalent to $\left(a-b\right)^2$(a−b)2?
Easy
< 1min
$\left(3+4\right)^2=3^2+4^2$(3+4)2=32+42
Easy
1min
$\left(y-3\right)^2=y^2-9y+9$(y−3)2=y2−9y+9
Easy
1min
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