Answer:
4x^2 + 3x - 9
Step-by-step explanation:
First, add together functions R(x) and S(x). Stack them vertically and combine like terms:
R(x) = 2 - x^2
S(x) = 2x + 5
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(R+S)(x) = -x^2 + 2x + 7
Now subtract the above result from Q(x):
Q(x) - (R(x) + S(x)) = 3x^2 + 5x - 2 + x^2 - 2x - 7, or 4x^2 + 3x - 9
Volume of a cuboid = 42 cm³
Volume of a cuboid = side A × side B × side C
Side A = 2 cm
Side B = 3 cm
Side C = 7 cm
= 2 cm × 3 cm × 7 cm
= 42 cm³
Im sorry but it is kind of confusing
5% see above for how I got that
5,3
