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Alex_Xolod [135]
3 years ago
13

Which polynomial expression represents the area of the outermost square tile, shown below?

Mathematics
1 answer:
erastova [34]3 years ago
5 0

Answer:

x² - 6x + 9

Step-by-step explanation:

(x - 3)² = x² - 6x + 9

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I think its C if I'm wrong, sorrryyy

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2 years ago
Prove the quadratic formula
STALIN [3.7K]

ax² + bx + c = 0

x = (-b ± √(b² - 4ac))/2a


First, rewrite the first equation so that the first coefficient is 1. Divide everything by a.

(ax² + bx + c = 0)/a =

x² + (b/a)x + (c/a) = 0

Isolate (c/a) by subtracting (c/a) from both sides

x² + (b/a)x + (c/a) (-(c/a) = 0 (- (c/a)

x² + (b/a)x = 0 - (c/a)

Add spaces

x² + (b/a)x          =  -c/a

Take 1/2 of the middle term's coefficient and square it. Remember that what you add to one side, you add to the other.

x² + (b/a)x + (b/2a)² = -c/a + (b/2a)²

Simplify the left side of the equation.

x² + (b/a)x + (b/2a)² = (x + (b/2a))²

(x + b/2a))² = ((b²/4a²) - (4ac/4a²)) -> ((b² - 4ac)/(4a²))

Take the square root of both sides of the equation

√(x + b/2a))² = √((b²/4a²) - (4ac/4a²))

x + b/(2a) = (±√(b² - 4ac)/2a

Simplify. Isolate the x.

x = -(b/2a) ± (∛b² - 4ac)/2a = (-b ± √(b² - 4ac))/2a

~

3 0
3 years ago
Caold someone PLEASE HELP me with number 56
dusya [7]
What's the question?
5 0
3 years ago
Aubrey went shopping for shrimp for her family's annual shrimp boil. Find the cost per pound. Which store has the best buy of co
denpristay [2]

Answer:

Cash Saver has the best price $13.44 per pound

Step-by-step explanation:

Lets work in oz.

PW sells 10 oz for 8.50 so 8.50/10 = 85 cents per ounce

CS sells 8 oz for 6.75 so 6.75/8 = .84 cents per ounce

Remember 16 oz in a pound

5 0
3 years ago
120 is 15% of what number
son4ous [18]
120 = 15% x

15% = 0.15

x = 120 / 0.15 = 800
6 0
3 years ago
Read 2 more answers
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