2.12.4 Quadratic Functions, SPM Practice (Paper 1)

Question 10:
The quadratic equation $x^2-4x-1=2p(x-5)$ , where p is a constant, has two equal roots. Calculate the possible values of p.

Solution:

Question 11:
Find the range of values of k for which the equation $x^2-2kx+k^2+5k-6=0$ has no real roots.

Solution:

Question 12:
Find the range of values of p for which the equation $5x^2+7x-3p=6$ has no real roots.

Solution: