Question

y=x²-3x-4 put
x=-1
x=- 3​

Answer 1

$\red\rightarrow\boxed{y=({x})^{2}-3x-4}$

$\red\rightarrow \boxed{y=({-1})^{2}-3×{-1}-4}$

Answer 2

Answer:

we have the equation,

                                y = x² - 3x - 4

given,           x = -3

                    x = -1​

Step-by-step explanation:

so,

                  taking x = -3

substituting in given equation,

                    y = -3² -3(-3) -4

                    y = 9 + 9 -4

                    y = 14

and,

                   taking x = -1

substituting in given equation,

                    y = -1² -3(-1) -4

                    y = 1 + 3 -4

                    y = 0

Hope it may help you bro :)