2 years ago

What equation is described below?

Mathematics

1 answer:

slega [8]2 years ago

8 0

Answer:

7×7=49

Step-by-step explanation:

Is means equals and times means multiply

7×7=49

True

7−7=49

7-7=0 False

7+7=49

7+7 =14 False

49÷7=7

True but this is not the equation described above

7×7=48

49False

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One of the roots of the quadratic equation 4mnx^2 – 6m^2x – 6n^2x + 9mn = 0 (m, n ≠ 0) is a)-3m/2n b)3m/2n c)2m/3n d)-2m/3n

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Answer:

$B.\ \frac{3m}{2n}$

Step-by-step explanation:

Given

$4mnx^2 - 6m^2x - 6n^2x + 9mn = 0\ (m, n \neq 0)$

Required

Calculate one of the root of the equation

$4mnx^2 - 6m^2x - 6n^2x + 9mn = 0$

Factorize

$2mx(2nx - 3m) -3n(2nx - 3m) = 0$

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Split equation

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Make x the subject of formula in both expressions

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<em>From the list of given options, one of the roots of the equation is</em> $\frac{3m}{2n}$

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