Question

2. (i) Is x = 5 a solution of the equation
r? - 2x - 15 = 0 ?
(ii) Is x = -3 a solution of the equation
2x2 - 7x + 9 = 0 ?​

Answer 1

Answer:

(1) x=5

(5)^2-2(5)-15

25-10-15

0

(2) x=-3

2(-3)2-7(-3)+9

18+21+9

=48

Answer 2

hope this helps:)

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