Multiply
(2m + 7) (2m – 7)

Simplifying

(2m + 7)(2m + -7) = 0

Reorder the terms:

(7 + 2m)(2m + -7) = 0

Reorder the terms:

(7 + 2m)(-7 + 2m) = 0

Multiply (7 + 2m) * (-7 + 2m)

(7(-7 + 2m) + 2m * (-7 + 2m)) = 0

((-7 * 7 + 2m * 7) + 2m * (-7 + 2m)) = 0

((-49 + 14m) + 2m * (-7 + 2m)) = 0

(-49 + 14m + (-7 * 2m + 2m * 2m)) = 0

(-49 + 14m + (-14m + 4m2)) = 0

Combine like terms: 14m + -14m = 0

(-49 + 0 + 4m2) = 0

(-49 + 4m2) = 0

Solving

-49 + 4m2 = 0

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '49' to each side of the equation.

-49 + 49 + 4m2 = 0 + 49

Combine like terms: -49 + 49 = 0

0 + 4m2 = 0 + 49

4m2 = 0 + 49

Combine like terms: 0 + 49 = 49

4m2 = 49

Divide each side by '4'.

m2 = 12.25

Simplifying

m2 = 12.25

Take the square root of each side:

Step-by-step explanation:

4m

Step-by-step explanation:

2m+2m=4m

7-7=0

None of the expressions is simplified to 41.

Step-by-step explanation:

You have to follow the P.E.M.D.A.S., this is:

P:Parentheses first.

E:Exponent next.

M:Multiplication.

D:Division.

(Multiplication and Division is whichever come first, from left to right)

A: Addition.

S: Subtraction.

(Addition and Subtraction is whichever come first, from left to right).

We are going to analyze every option:

1. 10+ 2.4 - 1

First we have to solve the multiplication:

Now we have to solve the addition and subtraction from left to right:

This is not a correct answer.

2. 10+2.(4-1)

We have to solve the parentheses first:

Now the multiplication and then the addition.

This is not a correct answer.

3. (10+23).4-1

We have to solve the parentheses first:

Now the multiplication and then the subtraction:

This is not a correct option.

4.

We have to solve the parentheses first, in the parenthesis first we have to solve: and then do the multiplication.

Now we have to solve the addition and subtraction from left to right:

This expression is not a correct option.

Then none of the expressions is simplified to 41.