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butalik [34]
3 years ago
13

What is the first step in simplifying the expression 11x-2-3(1-7x)^2+(x+1)?

Mathematics
1 answer:
Gennadij [26K]3 years ago
7 0

Answer:

PEMDAS is a great way to figure this out!

P - Parenthesies

E - Exponents

M - Multiplcation

D - Division

A - Addition

S - Subtraction

Follow this order and you should be good to go! Here's how I would follow this in this equation.

11x-2-3(1-7x)^2+(x+1)

First, parentheses

The 3 directly next to the parenthesies shows that everything inside of the () needs to be multiplied by 3.

-3*1  and -3*-7x (don't forget the negative)

This gives us 11x-2+(-3+21x)^2+(x+1)

Now distribute the exponents to everything inside of the parentheses.

11x-2+-3^2+21x^2+(x+1)

now solve the numbers with exponents without a variable.

3^2 = 3*3 = 9

combine any numbers without a variable outside of parentheses

11x-2+9+21x^2+(x+1)

11x+7+21x^2+(x+1)

From here, what I would do is divide the whole equation by 2

5.5x+3.5+21x+(.5x+.5)

now combine x values outside of parentheses

3.5+26.5x+(.5x+.5)

I believe this would be the simplest form, but please do correct me if I'm wrong or made any errors

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How would you determine the axis of symmetry in order to graph x^2 = 8y^2.
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<span>(x-0)2+(y-p)2 = (y+p)2+(x-x)2. 
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Step-by-step explanation:

i hope this helps :)

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Step-by-step explanation:

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b. To tind the time that the ball will be over 96 ft over the ground substitute in s(t)=80t-16t^{2}

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The ball will be at height 96 ft at time 2 sec. and 3 sec.

So the ball will be at height over than 96 = 3 - 2 = 1 sec.

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