Evaluate : (2a−B) (2a+B) (4a2+B2)

Evaluate : (2a−b) (2a+b) (4a²+b²)

योग

(2a−b) (2a+b) (4a²+b²)

= [(2a)²−(b)²] (4a²+b²)

= (4a²−b²) (4a²+b²)

= (4a²)² − (b²)²

= 16a⁴ − b⁴

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Product of Sum and Difference of Two Terms

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अध्याय 12: Identities - Exercise 12 (A) [पृष्ठ १५०]

अध्याय 12 Identities
Exercise 12 (A) | Q 3.3 | पृष्ठ १५०

Evaluate : (a+1) (a-1) (a²+1)

Use the product (a + b) (a – b) = a² – b² to evaluate:
21 x 19

Use the product (a + b) (a – b) = a² – b² to evaluate:
33 x 27

Use the product (a + b) (a – b) = a² – b² to evaluate:
103 x 97

Use the product (a + b) (a – b) = a² – b² to evaluate:
9.8 x 10.2

Use the product (a + b) (a – b) = a² – b² to evaluate:
7.7 x 8.3

Use the product (a + b) (a – b) = a² – b² to evaluate:
4.6 x 5.4

Evaluate : `("a"/(2"b")+(2"b")/"a")("a"/(2"b")-(2"b")/"a")`

Evaluate : `(3"x"-1/(2"y"))(3"x"+1/(2"y"))`

Evaluate: (m + 3) (m − 3) (m² + 9)