Answer:
99
Explanation:
5x^2 + 2y^2 + 12x + 5y
(5 * 3^2) + (2 * 2^2) + (12 * 3) + (5 * 2)
3^2 = 9
2^2 = 4
(5 * 9) + (2 * 4) + (12 * 3) + (5 * 2)
5 * 9 = 45
2 * 4 = 8
12 * 3 = 36
5 * 2 = 10
45 + 8 + 36 + 10 = 99
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