Question

Umm.. just started this 2day and its not on my notes(p′︵‵。)

Answer 1

10. 7

11. 10

12. 10

Explanation:

Put the given value to the expression.

Use PEMDAS:

P Parentheses first

E Exponents (ie Powers and Square Roots, etc.)

MD Multiplication and Division (left-to-right)

AS Addition and Subtraction (left-to-right)

`10.\\3m+8-2m^3,\ m=-1:\\\\3(-1)+8-2(-1)^3=-3+8-2(-1)=-3+8+2=7\\\\11.\\4y^5-6y+8y^2-1,\ y=-1:\\\\4(-1)^5-6(-1)+8(-1)^2-1=4(-1)+6+8(1)-1=-4+6+8-1=10\\\\12.\\2w+w^3-(1)/(2)w^2,\ w=2:\\\\2(2)+2^3-(1)/(2)(2^2)=4+8-(1)/(2\!\!\!\!\diagup_1)(4\!\!\!\!\diagup^2)=4+8-2=10`