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Blababa [14]
4 years ago
8

Evaluate each expression for the given values of the variables.

Mathematics
1 answer:
antiseptic1488 [7]4 years ago
8 0
All of these involve simple substitution. Just replace the variable with the actual value.

8z + 3 >>> 8(8) + 3 = 64 + 3 = 67

3(7+ x^2) >>> 3(7 + 2^2) = 3(7 + 4) = 3(11)=33

s - 5t + s^2 >>> 4 - 5(-1) + 4^2 = 4 + 5 + 16

Get the trend? I am not sure I get that last one, is it:

x - y*3^2?

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Answer:

(7x-1)(x-3)

Step-by-step explanation:

7x^2 - 22x + 3

The factors have to add to -22, but multiply to equal 3. But since the "a" value has a number on it, you have to use it too.

(7x +/- [n1]) ( x +/- [n2]) = 7x^2 - 22x + 3

Since the two numbers multiply to a positive value, they have to have the same sign. (7x-1) (x-3) works to produce the expression when it's foiled.

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3 years ago
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Step-by-step explanation:

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4 years ago
23mm,20mm,13mm sides and 62,72,46, angle what type of triangle is that
Readme [11.4K]
23 mm, 20mm, 13mm sides: No equal sides and No equal angles are characteristics of a Scalene Triangle.

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Pete is 15 years old.This is 6 years younger than his sister Vitoria.Write and solve a subtraction equation to find Victoria’s a
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