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Expression Formation

Expansion of ...

Question

Expansion of $(a + b)^{2}$ is:

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Solution

$(a + b)^{2} = (a + b) (a + b) = a^{2} + a b + a b + b^{2} = a^{2} + 2 a b + b^{2}$

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Q. Expansion of

(a - b)^{2}

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Q. Evaluate using expansion of

(a + b)^{2}

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is 428.49
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The expansion of ${(a + b)}^{2} = a^{2} + 2 a b + b^{2}$ .

Q. Evaluate using expansion of

(a + b)^{2}

(a - b)^{2}

(208)^{2}

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