PDF chapter test TRY NOW
1. Find the value of \((x - y)(x + y)(x^2 + y^2)\).
Answer:
Value \(=\)
2. Simplify:
(i) \((a + b)^2 - (a - b)^2 =\)
(ii) \((a + b)^2 + (a - b)^2 =\)
Answer variants:
\(x^4 - y^4\)
\(2(a^2 + b^2)\)
\(x^4 + y^4\)
\(-4ab\)
\(2(a^2 - b^2)\)
\(4ab\)
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