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natulia [17]
3 years ago
10

Which value must be added to the expression x^2– 3x to make it a perfect-square trinomial?

Mathematics
1 answer:
liraira [26]3 years ago
3 0

Answer:

\frac{9}{4}

Step-by-step explanation:

Given

x² - 3x

add ( half the coefficient of the x- term)²

x² + 2(- \frac{3}{2})x + (- \frac{3}{2})²

= (x - \frac{3}{2})² + \frac{9}{4}

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