Question

( x - a )( x + b ) ? , 105 x 102 (solve using identity)

Answer 1

$\huge\underline\mathbb{\red S\pink{O}\purple{L} \blue{UT} \orange{I}\green{ON :}}$

(1)

➡ (x - a)(x - b)

➡ x² - bx - ax - ab

(2)

➡ 105 × 102

➡ (100 + 5)(100 + 2)

• Bt using the above identity.

➡ (100)² + 2(100) + 5(100) + 5(2)

➡ 10000 + 200 + 500 + 10

➡ 10,710

Hence,it is solved...

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Answer 2

↪ (x - a)(x + b)

↪ x² - ax + bx - ab

➡ 105 × 102

➡ (100 + 5)(100 + 2)

➡ (100)² + 2(100) + 5(100) + 5(2)

➡ 10000 + 200 + 500 + 10

➡ 10,710.

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