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Y_Kistochka [10]
3 years ago
6

(a + b - c )(a + b + c )

Mathematics
2 answers:
ss7ja [257]3 years ago
8 0

Answer:

(a+b-c)(a+b+c)=a^2+2ab+b^2-c^2.

Step-by-step explanation:

We want to expand: (a+b-c)(a+b+c).

We use the distributive property to obtain:

(a+b-c)(a+b+c)=a(a+b+c)+b(a+b+c)-c(a+b+c).

We now expand to get:

(a+b-c)(a+b+c)=a^2+ab+ac+ab+b^2+bc-ac-bc-c^2.

This finally simplifies to

(a+b-c)(a+b+c)=a^2+2ab+b^2-c^2.

True [87]3 years ago
6 0

If you are looking for the expanded version, this is it. It is also possible to group either an a from (a^2 + 2b) or a b from (2ab + b^2). Hope this helps!

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The value of  \frac{-5}{8} (\frac{-3}{8}-\frac{1}{4} )= 25/64

<h3>What is fraction?</h3>

A fraction simply tells us how many parts of a whole we have. You can recognize a fraction by the slash that is written between the two numbers.

\frac{-5}{8} (\frac{-3}{8}-\frac{1}{4} )

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= -5/8 (-5/8)

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Thus, \frac{-5}{8} (\frac{-3}{8}-\frac{1}{4} )= 25/64

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brainly.com/question/10354322

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2 years ago
David's allowance is $5 every week, plus $2 for extra chores he does. Which equation shows his total allowance (A) every week, d
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Answer:

B

Step-by-step explanation:

A=5c+2 won't work because the 2 needs to be multiplied. B is the most reasonable option.

Hope this helps! :)

3 0
4 years ago
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How do you find the radius when given the volume and height? ​
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Answer:

Calculate the area of the base (which is a circle) by using the equation πr² where r is the radius of the circle. Then, multiply the area of the base by the height of the cylinder to find the volume. SOO just remember to divide the diameter by two to get the radius. If you were asked to find the radius instead of the diameter, you would simply divide 7 feet by 2 because the radius is one-half the measure of the diameter. The radius of the circle is 3.5 feet. You can also use the circumference and radius equation.

Step-by-step explanation:

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One and three tenths decreased by 4
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Answer:

1.3-4= -3.7

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