Answer:
A.
Step-by-step explanation:
1) to rewrite the given equation:
f(x)=2(x²+4x)-3; ⇔ f(x)=2(x²+4x+4)-3-8; ⇔ f(x)=2(x²+4x+4)-11; ⇔ f(x)=2(x+2)²-11;
2) the roots are:
3) finally, the correct answer is A.
Yes and for a. You can just put y=x [y=1x is bascually the same but just the 1 isnt needed]
Answer:
simplify -1-18
Step-by-step explanation:
Subtract 18 from −1
−
19
The third one
U solve from left to right and when two negatives are next to each other it turns to a plus.
Answer:
i think its c im not sure so it might be wrong im so sorry if its wrong
Step-by-step explanation:
