sederhanakan: a.(3x-4)(x^2+1) b.((3x-9)(2x+1))/((4x-11)(3x-7)) c.(3t^2-t+1)^2/(t-1) d.(3t^2+2t+5)^3 e.12/(x^2+2x)+4/x-2/(x+2); Berapa nilai ekspressi jika x=3?
Matematika
CitraLady
Pertanyaan
sederhanakan:
a.(3x-4)(x^2+1)
b.((3x-9)(2x+1))/((4x-11)(3x-7))
c.(3t^2-t+1)^2/(t-1)
d.(3t^2+2t+5)^3
e.12/(x^2+2x)+4/x-2/(x+2); Berapa nilai ekspressi jika x=3?
f.(x^2-x-6)/(x-3)×(x^2+5x+6)/(x+3)
a.(3x-4)(x^2+1)
b.((3x-9)(2x+1))/((4x-11)(3x-7))
c.(3t^2-t+1)^2/(t-1)
d.(3t^2+2t+5)^3
e.12/(x^2+2x)+4/x-2/(x+2); Berapa nilai ekspressi jika x=3?
f.(x^2-x-6)/(x-3)×(x^2+5x+6)/(x+3)
1 Jawaban
-
1. Jawaban MathSolver74
a) (3x - 4)(x² + 1) = 3x³ + 3x - 4x² - 4
= 3x³ - 4x² + 3x - 4
b) ((3x - 9)(2x + 1)) / ((4x - 11)(3x - 7))
= (6x² - 15x - 9) / (12x² - 61x + 77)
e) x = 3 ⇒ 12/(9 + 6) + 4/3 - 2/5
= 12/15 + 4/3 - 2/5
= 12/15 + 20/15 - 6/15
= 26/15