UPSKILL MATH PLUS
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Learn more1. Simplify by using the identity \((a + b)(a - b) = a^2 - b^2\).
(i) \((3x + 4)(3x - 4) =\)
(ii) \(53 \times 47 =\)
2. Simplify using the identity \((x + a)(x + b) = x^2 + x(a + b) + ab\).
\(43 \times 36 =\)
Answer variants:
\(2149\)
\(9x^2 + 16\)
\(1548\)
\(9x^2 - 16\)
\(1854\)
\(2491\)
\(1458\)
\(2941\)
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