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प्रश्न
(a + b)(a – b) = a2 – b2
विकल्प
True
False
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उत्तर
This statement is True.
Explanation:
We know that,
(a + b)(a – b) = a × a – a × b + b × a – b × b
= a2 – b2
= a2 – ab + ba – b2
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संबंधित प्रश्न
Evaluate the following, using suitable identity
297 × 303
Using suitable identities, evaluate the following.
(729)2 – (271)2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
49x2 – 36y2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
x4 – 1
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
16x4 – 81
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
y4 – 81
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
x4 – y4 + x2 – y2
Factorise the expression and divide them as directed:
(x3 + x2 – 132x) ÷ x(x – 11)
Verify the following:
(m + n)(m2 – mn + n2) = m3 + n3
Verify the following:
(a2 – b2)(a2 + b2) + (b2 – c2)(b2 + c2) + (c2 – a2) + (c2 + a2) = 0
