Wiskunde Multiple Choice Vraag uit Gricha's Wiskundige Vragenbank

$https://latex.codecogs.com/png.image?\inline \LARGE \dpi{110}\frac ab - \frac ba =$	A. 1
	B. $\large\boldsymbol{\frac {(a+b)(a-b)} {ab} }$
	C. $\large\boldsymbol{\frac {a^2\,+\:b^2} {ab} }$
	D. a² − b²
	E. 0

[ B-4998 - op net sinds 14.8.12-(E)-4.11.2024 ]

See above

$\frac{a}{b}-\frac{b}{a}=\frac{a^2}{ab}-\frac{b^2}{ab}=\frac{a^2-b^2}{ab}=\frac{(a-b)(a+b)}{ab}$

$https://latex.codecogs.com/png.image?\inline \LARGE \dpi{110}\frac ab - \frac ba =$	A. 1
	B. \(\large\boldsymbol{\frac {(a+b)(a-b)} {ab} }\)
	C. \(\large\boldsymbol{\frac {a^2\,+\:b^2} {ab} }\)
	D. a² − b²
	E. 0