Question

Evaluate the following expression when x = 3 and y = 4:

Fraction with x squared plus y cubed in the numerator and 2 plus x in the denominator.

A. 3.6
B. 8.6
C. 14.6
D. 21.6

Answer 1

Answer: 14.6


Explanation:

$\cfrac{x^2 + y^3}{2+ x}$

When x = 3, y - 4,

$\cfrac{3^2 + 4^3}{2+ 3} = \cfrac{73}{5} = 14 \cfrac{3}{5} = 14.6$

Answer 2

The value of the expression after substituting the x = 3 and y = 4 will be 14.6 so option (C) will be correct.

What is the substitution of an equation?

In the by substitution approach, one of the equations is solved for one of the variables, which is then transferred back into the other equation as a replacement, and the second equation is then solved for. then getting home safely is the first variable.

In other words, substitution is a method to find the value of variables x and y by just substituting x and y to another equation.

Given expression is

⇒ (x² + y³)/(2 + x)

Substituting x = 3 and y = 4

⇒ (3² + 4³)/(2 + 3)

⇒ 14.6

Hence 14.6 will be the correct answer to the given question.

For more about the substitution method

brainly.com/question/22340165

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