Question

if X equals to 2 and y equals to minus 2 then find the value of 7 x square - 3 x y + 5 y square​

Answer 1

Step-by-step explanation:

by putting the values of x and y as 2 and -2 respectively we get

$7 {(2)}^{2} - 3(2)( - 2) + 5( - 2)$

after solving further we get

$28 - ( - 12) - 10$

which is

$40 - 10 = 30$

so 30 is the right answer