Question

ANSWER ME PLEASS I BEG YOU​

Answer 1

(iv) ( 5⁴ × x¹⁰y⁴ ) / ( 5⁴ × x⁷y⁴ )

= $5^{4-4}*x^{10-7}y^{5-4}$

= $1*x^3y^1$

= $x^3y$

(vii) ( 3²  × 7⁸  × 13⁶ ) / ( 21²  × 91³ )

= ( 3²  × 7⁸  × 13⁶ ) / [ (7² × 3²) × (7³ × 13³) ]

= ( 3²  × 7⁸  × 13⁶ ) / [ 7²⁺³ × 3² × 13³ ]

= ( 3²  × 7⁸  × 13⁶ ) / [ 7⁵ × 3² × 13³ ]

= 3²⁻² × 7⁸⁻⁵ × 13⁶⁻³

= 7³ × 13³

= 753571