Problem 27 of 7
Prove the binomial square identity: (5x+1)^2.
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multiply (a+b)^2 or (a-b)^2.
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Proof must include the middle term from cross products.
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Solution
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1. Rewrite the square as product of two binomials.
2. Distribute all terms.
3. Combine the two cross terms.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
A^2+b^2 as expansion of (a+b)^2.