book Maths Puzzle Numerical Ability

I want to know can you help me on this problem:

x2 - x - 20 / x2 + 7x 10
x2 3x - 10 / x2 + 4x - 5

Read Solution (Total 0)

book Other Question

Complete the following:

a-30m^2=_____cm^2

b(0.03L=_____mL)

c (3yd^2=_____ft^2)

d (48,033ft^3=______yd^3)

e (10 ha=________ m^2)

f (-40degreesC= _______ degreesF)
Find all positive values for k for which the following can be factored.

x^2 + x - k

Thank you!