Question

1)-4,2x*(-6y)2)-6 (4+a)+8 (a-6)

Answer 1

Ответ:

1. -4,2х*(-6у)= -4,2*(-6)ху=25,2ху

2. -6(4+а)+8(а-6)= -24-6а+8а-48=(-6а+8а)+(24-48)=2а-24

Answer 2

To simplify the given expression, let's follow the order of operations (PEMDAS):

1. Parentheses: Simplify the expressions inside parentheses first.
2. Exponents: Perform any exponentiation.
3. Multiplication and Division: Perform multiplication and division from left to right.
4. Addition and Subtraction: Perform addition and subtraction from left to right.

The expression you provided is:

1. -4 + 2x * (-6y)^2 - 6(4 + a) + 8(a - 6)

Step 1: Parentheses -4 + 2x * (-6y)^2 - 6(4 + a) + 8(a - 6) -4 + 2x * (36y^2) - 6(4 + a) + 8(a - 6)

Step 2: Exponents -4 + 2x * 36y^2 - 6(4 + a) + 8(a - 6)

Step 3: Multiplication and Division -4 + 72xy^2 - 24 - 6a + 8a - 48

Step 4: Addition and Subtraction Combine like terms: (72xy^2 - 6a + 8a) + (-4 - 24 - 48)

Simplify further: 72xy^2 + 2a - 76

So, the simplified expression is: 72xy^2 + 2a - 76