Question

What should be the value of k if 7y Square - 3y - k = 35 when y = -2

Answer 1

Hiii....friend,

Here is ur answer,

$= > 7 {y}^{2} - 3y - k = 35$

At y = -2.

$= > 7( { - 2)}^{2} - 3( - 2) - k = 35$

=> 28 +6 -k = 35.

=> k = 34 -35

=> k = -1.

:-) Hope it helps u.

Answer 2

Answer:

7y^2 -3y-k= 35

7(-2)^2 -3×(-2)-k = 35

7×4+6 -k = 35

28+6 -k = 35

34-k = 35

-k = 35-34

-k = 1

k= -1