#Algebra IGCSE Paper 2

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spice wasp
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How would I work this out, my bad if it's a stupid question but I am just really confused.

unborn heraldBOT
spice wasp
worldly lance
worldly lance
# spice wasp

For this one you'll need to recall this formula:
$\newline\left(a-b\right)^{2}=a^{2}-2ab+b^{2}$