I think of a number, multiply by 4, add 1 and square the result
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Step-by-step explanation:
E.g.1. I think of a number, add 7 and the answer is 10. Find the number. ... I think of a number, multiply it by 2, take away 4. ... The result is then multiplied by 5 and the answer is 70.
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Answer:
(4x+1)^2 = 16x^2+1+8x
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