SOLUTION: solve this equetion 30x^2 - 30x-10=0

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Question 919498: solve this equetion 30x^2 - 30x-10=0
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
30x%5E2+-30x-10=0 .....simplify,all terms divide by 10

30x%5E2%2F10+-30x%2F10-10%2F10=0%2F10

3x%5E2+-3x-1=0 ...use quadratic formula

x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+

x+=+%28-%28-3%29+%2B-+sqrt%28+%28-3%29%5E2-4%2A3%2A%28-1%29+%29%29%2F%282%2A3%29+

x+=+%283+%2B-+sqrt%28+9%2B12+%29%29%2F6+
x+=+%283+%2B-+sqrt%28+21+%29%29%2F6+
x+=+%283+%2B-+4.58257569495584%29%2F6+
x+=+%283+%2B-+4.58%29%2F6+
solutions:
x+=+%283+%2B+4.58%29%2F6+
x+=+7.58%2F6+
x+=+1.26
or
x+=+%283+-+4.58%29%2F6+
x+=+-1.58%2F6+
x+=-0.26