SOLUTION: Use the quadratic formula to solve: -x^2+7x-10=0
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Question 178400This question is from textbook
: Use the quadratic formula to solve: -x^2+7x-10=0
This question is from textbook
Found 2 solutions by jim_thompson5910, josmiceli:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given equation.
Multiply EVERY term by -1 to make the leading coefficient positive.
Notice we have a quadratic equation in the form of where , , and
Let's use the quadratic formula to solve for x
Start with the quadratic formula
Plug in , , and
Negate to get .
Square to get .
Multiply to get
Subtract from to get
Multiply and to get .
Take the square root of to get .
or Break up the expression.
or Combine like terms.
or Simplify.
So the answers are or
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
When the equation is in the form
, you can use the
quadratic formula which is:
The 2 answers are:
and
I can see directly that this is true, since
and
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