5. Which of the following equations has the sum of its roots as 3?
(A) 2x² – 3x + 6 = 0
(B) - x²+ 3x - 3 = 0
(C)√2x²-3/√2x+1
(D) 3x² – 3x + 3 = 0

B

Step-by-step explanation:

Given a quadratic equation in standard form, ax² + bx + c = 0 ( a ≠ 0 )

Then the sum of the roots = -

A 2x² - 3x + 6 = 0

with a = 2 and b = - 3

sum of roots = - = ≠ 3

B - x² + 3x - 3 = 0

with a = - 1 and b = 3

sum of roots = - = 3 ← True

C x² - x + 1

with a = and b = -

sum of roots = - = ≠ 3

D 3x² - 3x + 3 = 0

with a = 3 and b = - 3

sum of roots = - = 1 ≠ 3

Thus the equation with sum of roots as 3 is B

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing

step-by-step explanation: