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y = x² + x - 12
x² + x - 12 = 0 (sederhanain deh)
(x - 3) (x + 4) = 0
x = 3 dan x = -4 (inilah titik potong di sumbu x)
untuk mengetahui titip potong di y. maka x = 0
y = x² + x - 12
y = (0)² + x - 12
y = -12 ini titik potong sb y
jadikan yg terbaik ya :)