Factored: 4 ( a + 2c - 2)
Standard form/simplified : 4a + 8c - 8
Answer:
number 2 is C and number 3 is D
Step-by-step explanation:
It belongs to the square root family. Your answer is B. Why the square root family? Because

can be written as

When you raise to 1/2 or 1/3 it is like saying the square root or the cube root.
Let the numbers be n, n+2, n+4
Sum equals too= 13+2(n+4), which is 2n+21
a) Equation--> n+n+2+n+4= 2n+21
b) Solution--> 3n+6= 2n+21
=> n= 15
c) Second number--> 17 (15+2)
Third number--> 19 (15+4)
d) 15+15+2+15+4=30+21
=> 51= 51
So, the equation is true.
And pls mark me brainliesttt :)))