....................................................... (Total 5 marks) Question 21. For all values of x f(x) = 2x 5 and g(x) = 25 + x2 − (a) Find g(−6) ....................................................... (1) (b) Show that gf(x) = 4x2 + 20x (2) (c) Solve gf(x) = g(7)
....................................................... (Total 5 marks) Question 21. For all values of x f(x) = 2x + 5 and g(x) = x2 − 25 (a) Find g(−6) ....................................................... (1) (b) Show that gf(x) = 4x2 + 20x (2) (c) Solve gf(x) = g(7)
pixl_ppe_march_edexcel_3h_qp.docx