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प्रश्न
Factorise the following.
x2 + 4x – 77
बेरीज
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उत्तर
We have,
x2 + 4x – 77
= x2 + (11 – 7)x – 77
= x2 + 11x – 7x – 77
= x(x + 11) – 7(x + 11)
= (x + 11)(x – 7)
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पाठ 7: Algebraic Expression, Identities and Factorisation - Exercise [पृष्ठ २३५]
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संबंधित प्रश्न
Show that (m – n)2 + (m + n)2 = 2(m2 + n2)
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If m – n = 16 and m2 + n2 = 400, then find mn.
