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3x^2+10x-8=0
(3x-2)(x+4)
bagian B;
f(x)=2x^2-4x-17
f(-3)=2(-3)^2-4.(-3)-17
f(-3)=2.9+12-17
f(-3)=18+12-17
f(-3)=13
b. f(x) = 2x² - 4x - 17
f(-3) = 2(-3)² - 4(-3) - 17
= 2(9) - 4(-3) - 17
= 18 + 12 - 17
= 13
semoga dapat membantu