diketahui f(x)= 2x-1 dan (gof) (x) =4x^2-10x+5. nilai dari g(-1)=..

langsung aja y

(gof)(x) = g{f(x)}

misal :
2x - 1 = a
x = a+1 / 2

soal menjadi →
g(a) = 4(a+1 /2)² - 10(a+1 / 2) + 5
g(a) = 4(a²+2a+1 / 4) - 5(a+1) + 5
g(a) = a² + 2a + 1 - 5a - 5 + 5
g(a) = a² - 3a + 1

g(2) = 2² - 3(2) + 1
g(2) = 4 - 6 + 1
g(2) = -1

semoga berguna +_+