UPSKILL MATH PLUS
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Learn moreExpand the following squares, using suitable identities.
(i) \((2x + 5)^2 =\)
(ii) \((b - 7)^2 =\)
Answer variants:
\(4x^2 - 20x + 25\)
\(4x^2 + 20x + 25\)
\(b^2 + 14b + 49\)
\(b^2 - 14b + 49\)
\(4x^2 + 20x - 25\)
\(b^2 - 14b - 49\)
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