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Using (X + A) (X + B) = X2 + (A + B) X + Ab, Find 103 × 104 - Mathematics

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ConceptStandard Identities

Question

Using (x + a) (x + b) = x2 + (a + b) x + ab, find 103 × 104

Solution

103 × 104 = (100 + 3) (100 + 4)

= (100)2 + (3 + 4) (100) + (3) (4)

= 10000 + 700 + 12 = 10712

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APPEARS IN

 NCERT Solution for Mathematics Textbook for Class 8 (2018 to Current)
Chapter 9: Algebraic Expressions and Identities
Ex. 9.5 | Q: 8.1 | Page no. 152

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Solution Using (X + A) (X + B) = X2 + (A + B) X + Ab, Find 103 × 104 Concept: Standard Identities.
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