Question

lues of the following expressions :
18. Find the value
(1) 36x2 + 49y2 + 84xy, when x = 1 /4
Y= 2/7​

Answer 1

Answer:

39/4 = 9.74

Step-by-step explanation:

i) 36x2 + 49y2 + 84xy, when x = 1 /4

Y= 2/7

$36 {( \frac{1}{4}) }^{2} + 49 { (\frac{2}{7}) }^{2} + 84 \frac{1}{4} \times \frac{2}{7}$

36/16 + 49×4/49 + 3×2

9/4. + 4 + 6

9+16+24/4

39/4 is the answer

Answer 2

Answer:

36×1/4×1/4+48×2/7×2/7+84×1/4×2/7

9/4+4+42/7

63+112+168/28

343/28 answer