UPSKILL MATH PLUS
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Learn moreUsing the identity \((x + a)(x + b) = x^2 + x(a + b) + ab\), find the following product.
(i) \((x + 3)(x + 7) =\)
(ii) \((6a + 9)(6a - 5) =\)
Answer variants:
\(a^2 - 10a + 21\)
\(x^2 - 10x + 21\)
\(a^2 + 10a + 21\)
\(36a^2 + 24a - 45\)
\(36a^2 + 24a + 45\)
\(36x^2 + 24x - 45\)
\(36x^2 + 24x + 45\)
\(x^2 + 10x + 21\)
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