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Two times the difference of a number and four is the same as five less than the number
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If we use a graphing tool, we can plot both graphs and find the solution quickly
<span>g(x)=x^2+2x-8</span> =7 =f(x)
The solutions are x1 =-5 , x2 = 3
<span>g(x)=x^2+2x-8</span> =7 =f(x)
The solutions are x1 =-5 , x2 = 3