a) Work out the value of 5²– 1⁵ x 2⁴
b) Work out the value of 7² + 4³÷ 2⁵
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Answer:
A. = ( 5^2 ) - ( 1^5 ) × ( 2^4 )
= ( 5 × 5 ) - ( 1×1×1×1×1 ) × ( 2×2×2×2 )
= 25 - 1 × 16
= 25 - 16 [ According to the rule of BODMAS ]
= 9 [ Answer ].
B. = ( 7^2 ) + ( 4^3 ) ÷ ( 2 ^ 4 )
= ( 7×7 ) + ( 4×4×4 ) ÷ ( 2×2×2×2 )
= 49 + 64 ÷ 16
= 49 + 4 [ According to the rule of BODMAS ]
= 53 [ Answer ]
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