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il63 [147K]
2 years ago
12

Which polynomial is a product of (3x+2) and (x-7)

Mathematics
1 answer:
pogonyaev2 years ago
5 0

(3x+2)  (x-7)

FOIL

first 3x*x  = 3x^2

outer  3x*-7 = -21x

inner = 2*x = 2x

last  2*-7 = -14

add them together  = 3x^2 -21x+2x -14

combine like terms  3x^2 -19x -14

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Vlada [557]

Answer: x = - 3.5

Step-by-step explanation:

Rewrite the equation by completing the square.

4x2 + 28x + 49 = 0

Completing the square method :

Divide through by the Coefficient of x^2

x^2 + 7x + (49/4) = 0

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Move c to the right side of the equation

x^2 + 7x = - 49/4

Complete the square on the left hand side by squaring its half of the x term

(7/2)^2 = (49/4)

Add the output to both sides of the equation

x^2 + 7x + (49/4) = - (49/4) + (49/4)

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4 0
3 years ago
. Caroline had 400 stamps in her collection. 1 10 th of them were Indian stamps, Onethird of the remaining stamps were from Euro
Ganezh [65]

Answer:

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6 0
3 years ago
I don’t understand what #5 is asking me to do! Ty
Aleksandr-060686 [28]

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Hope it helped! :)

4 0
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natulia [17]
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5 0
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