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Airida [17]
3 years ago
12

What value of b makes the expression x^2 + bx + 4 a perfect square? 1 0 2 4

Mathematics
2 answers:
Anon25 [30]3 years ago
8 0

Answer:

b=4 makes the equation a perfect square.

Step-by-step explanation:

As long as you factorize out the equation, you'll get a result of (x+2)^2. This multiplied using foil gives you, x^2 + 2x + 4. Making it a perfect square. You could also have -2 = b which makes a perfect square, but that's not in the options.

Aloiza [94]3 years ago
8 0

Answer:

4

Step-by-step explanation:

The constant term 4 is obtained by

adding (half the coefficient of the x- term)²

4 = 2²

Then b = 4

x² + 4x + 4 = (x + 2)² ← a perfect square

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Answer:

Step-by-step explanation:

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4 0
4 years ago
What is the correct answer?
emmainna [20.7K]

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5 0
3 years ago
Solve. -3/5x + 1/5 > 7/20
nignag [31]
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hope that helps, God bless!
5 0
3 years ago
To estimate the percentage of all their customers that would buy a new flavor, an ice cream shop surveys the first five customer
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1 blank) Not likely. 

2 blank) Not used data. 



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- Jazz
7 0
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