IP1U4 SWI (Algebraic Identities) Q15

IP1U4 SWI (Algebraic Identities) Q15

IP 1

Expand and simplify

\((x-2y)(x^2-4y^2)(x+2y)\)
\((x+2y-3z)^2\)
\((a-2b+3c-1)(a+2b-3c-1)\)
\((x-2y)(x+2y)-(x+2y)^2\)

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Answer:(i) \(x^4-8x^2y^2+16y^4\) (ii) \(x^2+4xy-6xz+4y^2-12yz+9z^2\) (iii) \(a^2-2a-4b^2+12bc-9c^2+1\) (iv) \(-8y^2-4xy\)

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