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Anettt [7]
3 years ago
12

(x^2-4x)^2+7x^2-28x+12=0

Mathematics
1 answer:
Valentin [98]3 years ago
7 0

Answer:

x^4-9x^2-28x=-12

Step-by-step explanation:

(x^2-4x)^2+7x^2-28x+12=0

(x^4-16x^2)+7x^2-28x=-12

x^4-9x^2-28x=-12

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Read 2 more answers
A triangle has side lengths of (1.3k+3.5m)(1.3k+3.5m) centimeters, (4.1k-1.6n)(4.1k−1.6n) centimeters, and (9.7n+4.4m)(9.7n+4.4m
Scorpion4ik [409]

Answer:

(5.4k+7.9m+8.1n) centimeters

Step-by-step explanation:

Given the side length of a triangle;

S1 = (1.3k+3.5m) cm

S2 = (4.1k-1.6n) cm

S3 = (9.7n+4.4m) cm

Perimeter of the triangle = S1+S2 + S3

Perimeter of the triangle = (1.3k+3.5m) + (4.1k-1.6n) + (9.7n+4.4m)

Collect the like terms;

Perimeter of the triangle = 1.3k+4.1k+3.5m+4.4m-1.6n+9.7n

Perimeter of the triangle = 5.4k+7.9m+8.1n

Hence the expression that represents the perimeter of the triangle is (5.4k+7.9m+8.1n) centimeters

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3 years ago
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