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y = x² + 3x+ 3
substitusikan
x² + 3x + 3 = 2x + 5
x² + x - 2 = 0
(x+2)(x-1)= 0
x =- 2 maka y = 2(-2)+ 5 = 1 --> (- 2, 1)
x = 1 , maka y = 2(1) + 5 = 7 --> (1, 7)
jwab A