3 years ago

Help I will be marking brainliest!

Mathematics

1 answer:

stepan [7]3 years ago

3 0

Answer: I think b

Step-by-step explanation:

You might be interested in

What is 5x+10 in its simplifiyed form?<br><br> srry for my spelling, in a rush- lol

Mumz [18]

Answer:

5(x+2)

Step-by-step explanation:

3 0

1 year ago

What are the correct answers and why? Simple and concise explanation please!!!

dezoksy [38]

Answer:

$\large\boxed{-\bigg[(x-3)^2+2x\bigg]+1}\\\\\boxed{-x^2+4x-8}$

Step-by-step explanation:

$(g\ \circ\ f)(x)=g\bigg(f(x)\bigg)$

$f(x)=(x-3)^2+2x\\\\g(x)=-x+1\\\\g\ \circ\ f\to\text{put f(x) instead of x in the function g(x)}:\\\\(g\ \circ\ f)(x)=-\bigg[\underbrace{(x-3)^2+2x}_{x}\bigg]+1$

-----------------------------------------

$-\bigg[(x-3)^2+2x\bigg]+1=-(x-3)^2-2x+1\\\\\text{use}\ (a-b)^2=a^2-2ab+b^2\\\\=-(x^2-(2)(x)(3)+3^2)-2x+1=-(x^2-6x+9)-2x+1\\\\=-x^2-(-6x)-9-2x+1=-x^2+6x-9-2x+1\\\\\text{combine like terms}\\\\=-x^2+(6x-2x)+(-9+1)=-x^2+4x-8$

-----------------------------------

$-x^2+4x-8=-x^2+4x-2^2+2^2-8=-(x^2-4x+2^2)+4-8\\\\=-(\underbrace{x^2-(2)(x)(2)+2^2}_{(a-b)^2=a^2-2ab+b^2})-4=-(x-2)^2-4=-(x+1-3)^2-4$

$In\ (-x+1-3)^2+2x,\ x^2\ will\ be\ positive.\\In\ (-x+1-3)^2+2(-x+1),\ x^2\ will\ be\ positive.$

6 0

2 years ago

Read 2 more answers

Describe how you regroup when you find the sum of 64 + 43

Leno4ka [110]

All i do is i think of 4+3 which equals 7 and then 6+4 which equals 10 then i put the numbers together.

so my answer is 107

64
43
----------------
107

4 0

3 years ago

Read 2 more answers

Expanded form of 670,200,640

Alona [7]

600,000,000+ 70,000,000+ 200,000+ 600+ 40

8 0

3 years ago

Need help on this one thank u

Mkey [24]

Answer:

Step-by-step explanation: