please help me to solve this
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Answer:
10 / 7 t^14
Step-by-step explanation:
49 × t^( - 5 ) × 7^( - 3 ) × 10 × t^( - 9 )
= 7^2 × t^( - 5 ) × 7^( - 3 ) × 10 × t^( - 9 )
= 7^2 × 7^( - 3 ) × t^( - 9 ) × t^( - 5 ) × 10
= 7^( 2 - 3 ) × t^( - 9 - 5 ) × 10
= 7^( - 1 ) × t^( - 14 ) × 10
= ( 1 / 7 ) × ( 1 / t^14 ) × 10
= [ 1 / ( 7 × t^14 ) ] × 10
= 10 / 7 t^14
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