Wiskunde Multiple Choice Vraag uit Gricha's Wiskundige Vragenbank

$\frac {y^{\,a-b}} {y^{\,a+b}}$ is gelijk aan	A. 1
	B. y^2b
	C. \(\large \boldsymbol{ \frac {1} {y^{2b}} }\)
	D. \(\large \boldsymbol{ \frac {1} {y} }\)
	E. \(\large \boldsymbol{ \frac {1} {y^a} }\)

[ 2,3-3209 - op net sinds 17.11.14-(E)-30.10.2023 ]

Translation in E N G L I S H

$\frac {y^{\,a-b}} {y^{\,a+b}}$ is equal to	A. 1
	B. y^2b
	C. ¹ / y^2b
	D. ¹ / y
	E. ¹ / y^a

Oplossing - Solution

... = y^{a−b−(a+b)} = y^{a−b−a−b} = y^−2b = ...