no 7 b tlg dijawa yah pakai cara trims ▪_▪

a) g(6) = 2(6²) - 7 = 72 - 7 = 65
g(-4) = 2(-4)² - 7 = 32 - 7 = 25

b) g(a) = 2a² - 7
11 = 2a² - 7
11 + 7 = 2a²
18 = 2a²
18/2 = a²
a² = 9
a = 3 atau a = -3