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Step2247 [10]
4 years ago
10

How do I solve for x? X+6x=56

Mathematics
2 answers:
Sergeu [11.5K]4 years ago
8 0
X+6x=56

7x=56

x= 8

So, x is equal to 8
belka [17]4 years ago
7 0
ax^2+bx+c=0
x^2+6x=56
x^2+6x-56=0
a=1    b=6    c=-56
\Delta=b^2-4ac=6^2-4*1(-56)=36+224=260
\sqrt{\Delta}=2\sqrt{65}
x_1=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-6-2\sqrt{65}}{2*1}=-3-\sqrt{65}
x_2=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-6+2\sqrt{65}}{2*1}=-3+\sqrt{65}
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