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ollegr [7]
3 years ago
11

Find the value of the expression. b2 − a for a = 4 and b = 5

Mathematics
2 answers:
damaskus [11]3 years ago
8 0

Answer: 21

Step-by-step explanation: To solve this problem we will substitute b to equal 5 and a to equal 4.

b2 - a

Plug in the values for b and a

5^2 - 4    (Solve 5^2 5 x 5 = 25)

25 - 4 (Subtract)

21 is the value of the expression.

Serjik [45]3 years ago
5 0

Answer:

21

Step-by-step explanation:

<u>Step 1:  Set a to 4 and b to 5</u>

<u />b^2-a

(5)^2-(4)

25-4

21

Answer:  21

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Please answer with steps shown. Thanks!
maks197457 [2]

Answer: q = 40

Step-by-step explanation:

Given the quadratic formula as

x = [-b +/-√(b^2 -4ac)]/2a

b = -14

a = 1

c = q

Difference d between the two roots.

d = [-b + √(b^2 -4ac)]/2a - [-b -√(b^2 -4ac)]/2a

d = 2√(b^2 -4ac)/2a

d = √(b^2 -4ac)/a

And d = 6

Substituting the values of a,b and c. We have;

6 = √[(-14^2) - (4×1×q)]

Square both sides

6^2 = 196 - 4q

4q = 196 - 36

q = 160/4

q = 40

The equation becomes

x^2 - 14x + 40 = 0

3 0
4 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:

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Which equation would give the graph below? (photo)
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Answer:

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Step-by-step explanation:

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