f
(
x
)
=
2
x
2
+
4
f
(
x
)
=
2
x
2
+
4
g
(
x
)
=
√
3
x
3
g
(
x
)
=
3
x
3

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

c

step-by-step explanation:

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

-2

7 - 9 = -2

reversed:

-2 + 9 = 7