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Give one reason why can be factorised over the real numbers whereas cannot.
MATHEMATICS · Subjective · CBSE · Mathematics · Polynomials · Polynomials
Problem
Give one reason why
9
y
2
−
64
9y^{2}-64
9
y
2
−
64
can be factorised over the real numbers whereas
9
y
2
+
64
9y^{2}+64
9
y
2
+
64
cannot.
Related theory
Factorisation of Polynomials
Polynomials
Algebraic Identities
Factorisation by identities
Algebra
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