Factorisation
Hong Kong
Stage 4 - Stage 5
Perfect squares
Interactive practice questions
By expanding $\left(b+7\right)^2$(b+7)2, we want to determine the factorisation for $b^2+14b+49$b2+14b+49.
a
First expand $\left(b+7\right)^2$(b+7)2.
b
Hence, factorise $b^2+14b+49$b2+14b+49.
Easy
1min
By expanding $\left(y-5\right)^2$(y−5)2, we want to determine the factorisation for $y^2-10y+25$y2−10y+25.
Easy
1min
Factorise $x^2+10x+25$x2+10x+25
Easy
< 1min
Factorise $x^2+14x+49$x2+14x+49
Easy
< 1min
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