Question

Find the value of p if (3,2)is the solution of px-5y+p^2

Answer 1

Answer:

Substitute the x and y values in:

p^2 + 3p - 5(2) = 0

p^2 + 3p - 10 = 0

Factorise this:

(p - 2)(p + 5)

p = 2

p = -5