10u + 7 = 8 ( 2u - 4 ) - 9
2 answers:
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Answer:
Option 3 is correct as Leon multiplied 8 by 2 when he should have raised 8 to a power of 2.
Step-by-step explanation:
Given : Leon evaluated the expression for a=8
(-4(8) - 6) + 82 , (-32-6) + 82 , (-38) + 82 , (-38) + 16 –19 + 16 –3
Leon's work is not so proper , Option 3 is correct as Leon multiplied 8 by 2 when he should have raised 8 to a power of 2.
Correct steps are :
Step 1 :
Step 2 : Put a=8 in the equation we get,
Therefore, correct answer is 26.