SOLUTION: (5x+75)^2=250 7(x^2+1)^1/2+28(x^2+1)^-1/2

Question 66900: (5x+75)^2=250

7(x^2+1)^1/2+28(x^2+1)^-1/2
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
(5X+75)^2=250
25X^+375X+375X+5625=250
25X^2+750X+5625-250=0
25X^2+750X+5375=0
X^2+30X+215=0 USING THE QUADRATIC EQUATION WE GET
X=(-B+-SQRT[B^2-4AC])/2A
X=(-30+-SQRT[30^2-4*1*215])/2*1
X=(-30+-SQRT900-860])/2
X=(-30+-SQRT40)/2
X=(-30+-6.32)2
X=(-30+6.32)/2
X=-23.68/2
X=-11.84 SOLUTION
X=(-30-6.32)/2
X=-36.32/2
X=-18.16 SOLUTION

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