Please help me i dont understand it and i dont know the answers

asked Dec 17, 2022 191k views

5 votes

3.7k points

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5 votes

Answer:

Explanation:

a) y=
x^(2) -4x

x=-1 ⇒ y=
(-1)^(2) +4=1+4=5

x=1 ⇒ y=
1^(2) -4=1-4=-3

x=2 ⇒ y=
2^(2) +8=4-8=-4

x=4 ⇒ y=
4^(2) -16=16-16=0

b)
x^(2) -4x =
x^(2) -4x+4-4=(x-2)^(2)-4

so the blue one

Zabumba answered Dec 23, 2022

4.5k points

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