Answer
69
Work Step by Step
Given 3$x^{2}$ +2xy +5$y^{2}$, x=2, y=3
Step 1: Put the value of x=2 and y=3 for each x and y in the expression
=3$(2)^{2}$ +2(2)(3) +5$(3)^{2}$
Step 2: Evaluate the exponential expression$(2)^{2}$ = (2)(2) = 4
$(3)^{2}$ = (3)(3) = 9
=3(4)+2(2)(3)+5(9)
Step 3: Multiply 3(4) = 12, 2(2)(3) = 12, 5(9) = 45
=12+12+45
Step 4: Add and Subtract from left to right
first add 12+12
24+45= 69
