Question

If x=3 and y=5, work out the answer for 2x squared + 3y squared

Answer 1

Answer:

93

Step-by-step explanation:

2x^2=18

3y^2=75

hence;18+75=93

Answer 2

SOLUTION

TO DETERMINE

2x² + 3y² when x = 3 , y = 5

EVALUATION

Here the given expression is

2x² + 3y²

Putting x = 3 , y = 5 we get

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

$\sf = 2 \times {(3)}^{2} + 3 \times {(5)}^{2}$

$\sf = (2 \times 9) + (3 \times 25)$

$\sf = 18 + 75$

$\bf = 93$

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