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Expansion of (x+a)(x+b)

Expand by usi...

Question

Expand by using a suitable formula.

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Solution

(1) Using the identity (a + b)² = a² + 2ab + b²:

(2) Using the identity (a + b)² = a² + 2ab + b²:

(3) Using the identity (a + b)² = a² + 2ab + b²:

(4) Using the identity (a + b)² = a² + 2ab + b²:

(5) Using the identity (a + b)² = a² + 2ab + b²:

(6) Using the identity (a + b)² = a² + 2ab + b²:

(7) Using the identity (a + b)² = a² + 2ab + b²:

(8) Using the identity (a + b)² = a² + 2ab + b²:

(9) Using the identity (a + b)² = a² + 2ab + b²:

(10) Using the identity (a + b)² = a² + 2ab + b²:

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