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Ayeesha
Ayeesha
10-01-2017
Mathematics
Answered
25x^2+40x+16=28
Ansa ASAP
Verified Answer :
Hi4801824552
Hi4801824552
10-01-2017
Solution:
Move all terms to one side
25{x}^{2}+40x+16-28=0
Simplify
25{x}^{2}+40x+16-28 to
25
x
2
+40x
−12
25{x}^{2}+40x-12=0
Apply the Quadratic Formula
x=\frac{-40+20\sqrt{7}}{50},\frac{-40-20\sqrt{7}}{50}
Simplify solutions
x=-\frac{2(2-\sqrt{7})}{5},-\frac{2(2+\sqrt{7})}{5}
Done!
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