A) ((1/7) ⁻² + 1) ⁻² =
B) ((½)⁻² -1)⁻³ =
A) ((1/7) ⁻² + 1) ⁻² == ((7)² + 1)⁻² = = (49 + 1)⁻² = = (50)⁻² = = (1/50)² = = 1/2500==========================B) ((½)⁻² -1)⁻³ == ((2)² - 1)⁻³ = = (4 - 1)⁻³ = = (3)⁻³ = = (1/3)³ = = 1/27
w zalaczniku
A) ((1/7) ⁻² + 1) ⁻² =(1/7)⁻⁴+1⁻²=1/2401+1=1 1/2401
B) ((½)⁻² -1)⁻³ =(½)6-1⁻³=1/64-1=-63/64
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A) ((1/7) ⁻² + 1) ⁻² =
= ((7)² + 1)⁻² =
= (49 + 1)⁻² =
= (50)⁻² =
= (1/50)² =
= 1/2500
==========================
B) ((½)⁻² -1)⁻³ =
= ((2)² - 1)⁻³ =
= (4 - 1)⁻³ =
= (3)⁻³ =
= (1/3)³ =
= 1/27
w zalaczniku
A) ((1/7) ⁻² + 1) ⁻² =(1/7)⁻⁴+1⁻²=1/2401+1=1 1/2401
B) ((½)⁻² -1)⁻³ =(½)6-1⁻³=1/64-1=-63/64