SOLUTION: Solve the equation. 25a2 = (2a + 5)2

Question 320402: Solve the equation.
25a2 = (2a + 5)2
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
25a^2=(2a+5)2
25a^2=4a+10
25a^2-4a-10=0

a=(4+-sqrt[-4^2-4*25*-10])/2*25
a=(4+-sqrt[16+1,000)/50
a=(4+-sqrt1,016)/50
a=(4+-31.875)/50
a=(4+31.875)/50
a=35.875/50
a=.7175 ans.
a=(4-31.875)/50
a=(-27.875)/50
a=-.5575 ans.

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