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When $x = 2$ and $y = 1,$ the value of $− 8 7 x 3 y 4$ is $− 64 7$ . State if this statement is true or false.

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True

False

answer is A.

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Detailed Solution

Here, we are given a monomial expression as follows,

− 8 7 x 3 y 4

.
And the values of variable are

x = 2

and

y = 1

.
First, we substitute the given values of the variables in the expression and simplify as follows,

− 8 7 x 3 y 4 = − 8 7 2314 = − 8 7 × 8 × 1 = − 64 7

So, it can be observed that after substituting the given values, the result obtained is

− 64 7

, which asserts the given statement.
Therefore, the given statement is true.
Hence, the correct option is 1.

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