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almond37 [142]
3 years ago
14

Simplify: x^2-16/x-4 What does the given expression simplify to? What is the excluded value of x for the given expression?

Mathematics
2 answers:
Ksenya-84 [330]3 years ago
8 0

Step-by-step explanation:

Difference of Squares: a² - b² = (a + b)(a - b)

(x² - 16) / (x - 4)

= [(x + 4)(x - 4)] / (x - 4)

= x + 4, where x =/= 4.

aleksandrvk [35]3 years ago
8 0

Answer:

1.    (x+4)

2.     4

Step-by-step explanation:

got right on edge

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Step-by-step explanation:

96.25/1.25

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Martizas car has 16 gallons of gas in the tank. She use 3/4 of the gas. How many gallons of gas are left?
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Answer:

4 gallons

Step-by-step explanation:

as martizas used up 3/4 gallons, we can calculate the fraction of gas left using: 1−3/4=1/4.

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3 years ago
This table represents a quadratic function. x y 0 -3 1 -3.75 2 -4 3 -3.75 4 -3 5 -1.75 What is the value of a in the function’s
serg [7]

Answer:

a = 0.25

Step-by-step explanation:

Our strategy to solve this problem will be to use the information given in the table to obtain  first the value of c in the quadratic equation which has the form ax^2 + bx + c and then form a system of 2 linear equations  and solve for the coefficients a and b as follow:

from x=0 and y=-3   a*0 + b* 0 + c = - 3

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from x= 2 and y = -4

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we can even  plug the any of the other values for  x given in the table and check the answer.

8 0
4 years ago
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Lana71 [14]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
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