Question

(i) 36x2 + 49y2 + 84xy, when x = 3, y = 6​

Answer 1

3600

Step-by-step explanation:

36x2 + 49y2 + 84xy

${(6x)}^{2} + {(7y)}^{2} + 2(6x)(7y)$

${(6x + 7y)}^{2}$

put x = 3 , y = 6

${(6 \times 3 + 7 \times 6)}^{2}$

${(18 + 42)}^{2}$

${60}^{2}$

3600

Answer 2

Answer:

3600

I hope this is correct

Step-by-step explanation:

I) 36x^2 + 49y ^2+84xy

x=3 y=6

=36(3)^2 +49 (6)^2 + 84(3)(6)

=36*9+49*36+84*18

=3600