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I'm having trouble with this question any help?

I'm having trouble with this question any help?
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4 votes
I'm having trouble with this question any help?

I'm having trouble with this question any help?-example-1
User Alin Faur
by
8.5k points

2 Answers

1 vote
The added number is 49/4. Proof:

x² + 7x = 11
x² + 7x + 49/4 = 11 + 49/4
(x+7/2)² = 11+49/4


User Juan Leni
by
8.1k points
4 votes
answer is 2) 49/4

x^2 +7x = 11

left side
x^2 + 2 (x) (7/2) + 49/4
= (x + 7/2)^2


User Fokrule
by
7.9k points
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