Question

(2х2+6×-7)+(3х3-5×2 -1)​

Answer 1

Ответ:

(2•2+6•-7)+(3•3-5•2-1)=(4-13)+(9-5)=-9+4=-5

Answer 2

Ответ:

(2х2+6-7)+(3х3-5х2-1=-5

Объяснение:

Answer 3

Let's simplify the expression step by step:

(2 × 2 + 6 × -7) + (3 × 3 - 5 × 2 - 1)

First, let's perform the multiplications inside the parentheses:

(4 + -42) + (9 - 10 - 1)

Next, let's simplify the additions and subtractions within each set of parentheses:

(-38) + (-2)

Finally, we can combine the terms:

-38 - 2 = -40

Therefore, the simplified expression is -40.