Use exponent rule: x^y * x^z = x^y+z
4^2 * 4^8
4^2+8
4^10
1,048,576
Best of Luck!
Check the picture below.
then recall that the first term start with a highest exponent and gradually wanes, and the second term starts at 0, and gradually goes up. Then using those coefficients, expand away.
Answer:
There is 10% error in both minimum and extreme values i.e. 120 & 140 , Error in 120 is 10% i.e. = 12, Since value can be more or less in error ∴ Error in 120 is ±12.