SOLUTION: What is 2m^2+9m+7=3

Question 600343: What is 2m^2+9m+7=3
Found 2 solutions by jim_thompson5910, w_parminder:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Start with the given equation.

Subtract 3 from both sides.

Combine like terms.

Notice we have a quadratic equation in the form of where , , and

Let's use the quadratic formula to solve for m

Start with the quadratic formula

Plug in , , and

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 w_parminder(53) (Show Source): You can put this solution on YOUR website!

or
or
Now this quadratic equation can be solved using the formula

But I solve it by splitting its middle term
So can be written as

OR
OR
OR
Now either (m + 4) = 0 OR (2m + 1) = 0
solving these equations we get,
m = -4 & m = -1/2

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