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Subjects
Mathematics State Board
Class 7
Algebra
Introduction to Identities
19.
Four mark example problems I
Exercise condition:
8
m.
Simplify the following using the identity \((x + a)(x + b) = x^2 + x(a + b) + ab\).
(i)
\((x + 3)(x + 5) =\)
(ii)
\((y + 8)(y + 6) =\)
Answer variants:
\(x^2 + 8x + 15\)
\(y^2 - 14y + 48\)
\(y^2 + 14y + 48\)
\(x^2 - 8x + 15\)
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