Parker was given this problem on his homework: 6x2−4y+2x+4x2+8y. Here is the work he showed to simplify the expression by combining like terms.

6x2−4y+2x+4x2+8y
6x2+4x2=10x2
10x2+2x−4y+8y
4y+8y=12y
10x2+12y+2x
Parker's final answer was 10x2+12y+2x, but the correct answer should have been 10x2+4y+2x.

In at least 5 complete sentences, tell me where Parker made his mistake and how he can fix it to get the correct answer.

if x = 1, then the answer is 3.5

nope.   happens to me as well.

-aparri

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

it would rotate about 180 degrees.