book Maths Puzzle Numerical Ability

2(1+i)-3(2-3i)

3xsquare-2x-1=0

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book Other Question

Solve. The land area of China is 3.692 x 106 square miles, and that of India is 1.18 x 106 square miles. What is the total land area of China and India expressed in standard notation? find the slope of a line that is parallel to and slope of a line that is perpendicular to the following line: 3x+y=4

Thanks Caroline