Question

Simplify for all questions.

Answer 1

• 3y; -2a; -5y; 3c; -6

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Question 1

• 
  `-√(9y^2)=-(-3y)= 3y, \ since\ y < 0`

Question 2

• 
  `0.5√(16a^2) =0.5(-4a)=-2a,\ since\ a < 0`

Question 3

• 
  `-5√(y^2) =-5y, since \ y > 0`

Question 4

• 
  `3√(c^2) =3c,\ since \ c \geq 0`

Question 5

• 
  `\sqrt{(3-√(15))^2 } -\sqrt{(3+√(15))^2 } =-(3-√(15)) -(3+√(15))=-6, since\ 3 < √(15)`