IP1U4 SWI (Algebraic Identities) Q14

IP1U4 SWI (Algebraic Identities) Q14

IP 1

Expand and simplify

\((a^2-1)^2-(a^2+1)^2\)
\((s-2t)(-s-2t)-(s-2t)^2\)
\((2a+3)^2+(3a-2)^2\)
\((t-3)^2(t+3)^2(t^2+9)^2\)

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Answer:(i) \(-4a^2\) (ii) \(-2s^2+4st\) (iii) \(13a^2+13\) (iv) \(t^8-162t^4+6561\)

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