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1-150.

Challenge: Given: ax2 + bx + c = d(x − e)2 + f. Express a, b, and c in terms of d, e, and f. Homework Help ✎
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The strategy is to distribute the right side so that has an x² term, an x term, and a constant expression.
Then you can match 'a' to the constant with the x² term on the right, 'b' to the x term on the right and 'c' to the constant expression on the right.