13 Bài tập tổng hợp Toán 8 Kết nối tri thức Chương 6

A.B = C.D

A.N = B.M

A.M = B.N

A.B = M.N

x ≤ 2

x ≠ 1

x = 2

x ≠ 2

$\dfrac{-5x+3}{6}.$

$\dfrac{-5x-3}{6}.$

$\dfrac{-5x-3}{5}.$

$\dfrac{-4x-1}{-1}.$

-3

$\dfrac{a+3}{a}.$

$\dfrac{a(a+3)}{a^2}.$

$\dfrac{1}{a}.$

$\dfrac{1-3x}{x-1}.$

$\dfrac{3x-1}{x-1}.$

$-\dfrac{3x+1}{x-1}.$

$\dfrac{1-3x}{-x-1}.$

S = 3x² - 6x

$S=\dfrac{3x^2-6x}{2}.$

$S=\dfrac{x^2+2x+4}{2}.$

$S=\dfrac{x^2-2x-4}{2}.$

$\dfrac{x^2-2}{5(x+2)}$ và $\dfrac{x-2}{5}.$

$\dfrac{7y^2}{5}$ và $\dfrac{3xy^2}{2x}.$

$\dfrac{2x(x-5)}{3(5-x)}$ và $\dfrac{2x}{3}.$

$\dfrac{x+3}{x+1}$ và $\dfrac{(x+3)(x-1)}{x^2-1}.$

$\dfrac{-1}{xy}.$

$\dfrac{1}{xy}.$

$\dfrac{-3x-2}{3x^2y}.$

$\dfrac{1}{x^2y}.$

$\dfrac{y^2}{10x}.$

$\dfrac{2x^2}{5y}.$

$\dfrac{x^2}{10y}.$

$\dfrac{3x^2}{5y}.$

$-\dfrac{9}{8}.$

$\dfrac{9}{8}.$

$-\dfrac{1}{8}.$

$\dfrac{1}{8}.$