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Lelechka [254]
3 years ago
14

(5x+1)(5x-1) combine terms

Mathematics
1 answer:
Alinara [238K]3 years ago
5 0

Answer:

25x^2 -1

Step-by-step explanation:

If you multiply parentheses:

(5x*5x) + (5x*-1) + (1*5x) + (1*-1)

25x^2 - 5x + 5x -1

25x^2 -1

A simpler way is to memorize this formula

(Square1 - square2)= (sqrt of square1- sqrt of square2)*(sqrt of square1 + sqrt of sqaure2)

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tensa zangetsu [6.8K]
Add up all of your X’s!! then Try and add up all of the degrees I think. Check me if i’m wrong !
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3 years ago
Erica knits has 18 squares on Monday .She knits 7 more squares each day from Tuesday through Thursday .How many squares did Eric
pantera1 [17]

Answer:

39 squares in all

Step-by-step explanation:

step 1 right it out

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3 0
3 years ago
What is the equation of a line, in general form, that passes though points (-1,2) and (5,2)?
Tom [10]

Answer:

A

Step-by-step explanation:

To write the equation of the line. first calculate the slope using the slope formula.

m = \frac{y_2-y_1}{x_2-x_1} = \frac{2-2}{5--1}= \frac{0}{6} = 0

Since the slope of this line is 0, it is horizontal and has the form y=b where b is the y-coordinate. So y = 2 is the equation. In general form, it would be y-2 = 0

3 0
3 years ago
1. the sum of two rational numbers is always always a (irrational number / rational number)
Blizzard [7]

One

The sum of two rational numbers is always rational. sqrt(9) + sqrt(25) = 3 + 5 which is rational. sqrt(16/100) = 4/10 = 2/5 is also rational. 3/28 is rational as well.

Two

Those are irrational. sqrt(10) + pi = ???? You cannot reduce this to any kind of fraction. Two irrationals always give a rational.

Three

The irrational number controls the answer. 10 + sqrt(5) is irrational. The 10 is OK. It is raional, but sqrt(5) is not a rational number.

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3 years ago
Gerry is shopping for clothes at the mall.He buys 4 new shirts for $6.00.What is the unit rate for the shirts
elena-s [515]

the unit rate is 4:6

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3 years ago
Read 2 more answers
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