lizzy223
lizzy223
23-08-2017
Mathematics
contestada
I'm having trouble with this question any help?
Respuesta :
choixongdong
choixongdong
23-08-2017
answer is 2) 49/4
x^2 +7x = 11
left side
x^2 + 2 (x) (7/2) + 49/4
= (x + 7/2)^2
Answer Link
mreijepatmat
mreijepatmat
23-08-2017
The added number is 49/4. Proof:
x² + 7x = 11
x² + 7x + 49/4 = 11 + 49/4
(x+7/2)² = 11+49/4
Answer Link
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