Explain the mistake, then work the problem correctly.(4x3 - 2x2 + 5x - 1) - (8x3 - 7x2 - 2x + 4)= (4x3 - 2x2 + 5x - 1) + (-8x3 + 7x2 - 2x + 4)= -4x3 + 5x2 + 3x + 3
What will be an ideal response?
Mistake: did not change all signs in the subtrahend
Correct: -4x3 + 5x2 + 7x - 5
You might also like to view...
Solve the formula for the specified variable.A = P + Pr; for P
A. P = 
B. P = A - Pr
C. P = A - r - 1
D. P = 
Solve.Jim can run 5 miles per hour on level ground on a still day. One windy day, he runs 10 miles with the wind, and in the same amount of time runs 7 miles against the wind. What is the rate of the wind?
A. 
mph
B. 1
mph
C. 5 mph
D. 28
mph
Find the area of the rectangle.
A. 4232 sq ft B. 92 sq ft C. 184 sq ft D. 2116 sq ft
Convert the numeral to the requested form.Some enumeration systems in the past were repetitive. If you want to represent three of something, you repeat the symbol for 1 three times. If you want to represent 30 things, you write the symbol for 10 three times, and so on. In ancient Egypt, the symbol for 1 was 
and the symbol for 10 was 
. How would you write the numeral for 34 in the Egyptian system?
A. 
B. 
C. 
D. 
