SOLUTION: How do you solve quadratic equations like 10x^2+28x+16=0?

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Question 746974: How do you solve quadratic equations like 10x^2+28x+16=0?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

Use the quadratic formula to solve for x

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

x+=+%28-%2828%29%2B-sqrt%28%2828%29%5E2-4%2810%29%2816%29%29%29%2F%282%2810%29%29 Plug in a+=+10, b+=+28, c+=+16

x+=+%28-28%2B-sqrt%28784-%28640%29%29%29%2F%2820%29

x+=+%28-28%2B-sqrt%28144%29%29%2F20

x+=+%28-28%2Bsqrt%28144%29%29%2F20 or x+=+%28-28-sqrt%28144%29%29%2F20

x+=+%28-28%2B12%29%2F20 or x+=+%28-28-12%29%2F20

x+=+-16%2F20 or x+=+-40%2F20

x+=+-4%2F5 or x+=+-2

The two solutions are x+=+-4%2F5 or x+=+-2