Point R(4,-5) is reflected across the y-axis
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Hence it must be D) 7&8
to find the sum:
2(3t-4) - (t^2 + 2) - 4t(t-1)
6t - 8 - t^2 - 2 - 4t^2 + 4
6t - 8 - 5t^2 + 2
-5t^2 + 6t - 6
by the sum of roots and product of roots formulae
ax^2 + bx + c
x + y =
x + y =
xy =
xy =
x - y =