exam Maths Puzzle Numerical Ability

-2root-64 divided by root -16

its equals 4 or -4?

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exam Other Question

Let R(x)=x^3-7/x^2+1; what happens to R(x) if we now have R(x)-3?

a. It shifts 3 units to the left
b. It shifts 3 units down
c. It shifts 3 units to the right
d. It shifts 3 units up When a car reduces it speed by 18km/h, its wheels is 200cm in circumference, take 1 sec longer to make revolutions. What was the car's original speed?

quadratic equation for thi