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ki77a [65]
3 years ago
9

Please help first answer will be marked brainiest

Mathematics
1 answer:
Tresset [83]3 years ago
5 0

Answer:

6x

Step-by-step explanation:

add sides up

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In parallelogram ABCD, AE=x^2-6 and CE=5x what is the value of x ? What is AC?
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Answer:

see explanation

Step-by-step explanation:

The diagonals of a parallelogram bisect each other, hence

AE = EC, that is

x² - 6 = 5x ( subtract 5x from both sides )

x² - 5x - 6 = 0 ← in standard form

(x - 6)(x + 1) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 6 = 0 ⇒ x = 6

x + 1 = 0 ⇒ x = - 5

However x > 0 ⇒ x = 6

AC = x² - 6 + 5x = 6² - 6 + 5(6) = 36 - 6 + 30 = 60

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