exam Maths Puzzle Numerical Ability

Simplify

x/x2nd power - 16 divided by x3power/x2nd power - 14x + 40

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exam Other Question

can you help me with this problem please
write an equation in slope-intercept form that satisfies each condition.
passes through (4,5) and is parallel to x+2y=4

i did it like this 4+2(5)=4 im not sure if thats right... please help Suppose r>0 in the equation x^2 + px + r = 0.

a. the roots cannot be determined from the equation.

b. the equation has two real unequal roots.

c. the equation has one real root.

d. the roots must both be positive.