Question

6 – 4(3 – 5)^2 + 30 ÷ 5
6 – 4(–2)^2 + 30 ÷ 5
6 – 4(4) + 30 ÷ 5
6 – 16 + 30 ÷ 5
−10 + 30 ÷ 5
20 ÷ 5
Matt's answer 4

Answer 1

Matt's Answer is wrong its supposed to be -4

Answer 2

The answer is supposed to be -4.

Answer 3

Lol.

Answer 4

thanks

Answer 5

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Answer 6

Though I think you have to go to the step in which he was wrong..

Answer 7

Step 1 :

Raise -2 to the 2nd power

A Negative number raised to an even power is positive

For example let's look at (-7)6 , where (-7) , a negative number, is raised to 6 , an even exponent :

(-7)6 can be written as (-7)•(-7)•(-7)•(-7)•(-7)•(-7)

Now, using the rule that says minus times minus is plus, (-7)6 can be written as (49)•(49)•(49) which in turn can be written as (7)•(7)•(7)•(7)•(7)•(7) or 76 which is positive.

We proved that (-7)6 is equal to (7)6 which is a positive number

Using the same questions as above, replacing (-7) by any negative number, and replacing the exponent 6 by any even exponent, we proved which had to be proved


Equation at the end of step 1 :

\[ (6 - (4 \times 22)) + 6 \]
Step 2 :

Multiply 4 by 22
Multiplying exponents :

22 multiplied by 22 = \[ 2(2 + 2) = 24 \]
Equation at the end of step 2 :

\[ (6 - 24) + 6 \]
Step 3 :

Simplify -10 + 6
Final result :

-4

Answer 8

It would be step 3.

Answer 9

Err..step 4.

4 * 4 = 16, NOT -16.

Answer 10

-4(4) = -16...