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Mathematics, 13.05.2021 19:50 turboslayer

The expression 2x+(x-7)^2 is equivalent to x^2+bx+49 for all the values of x. what is the value of b?

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The expression 2x+(x-7)^2 is equivalent to x^2+bx+49 for all the values of x. what is the value of b...
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