Question

Which equations are correct? Select each correct answer.

Answer 1

Option 2 and 3

Explanation:

We know that as per distributive law, we have
`a(b+c)=ab+ac`.

Option 1.

`-5x^3(3x^3+2)=-15x^6-10x^3\\eq -15x^9-10x^3`

So, option 1 is not correct.

Option 2.

`-2c^6(5c^3+6)=-10c^9-12c^6`

So, option 2 is correct.

Option 3.

`-3y^5(2y^3+3)=-6y^8-9y^5`

So, option 3 is correct.

Option 4.

`-4b^4(5b^2+6)=-20b^6-24b^4\\eq -20b^8-24b^3`

So, option 4 is not correct.