1. Find the sum of the place values of 8 in 8,21,87,305.

8,00,80,000

Step-by-step explanation:

We need to find the sum of place values of 8 in 8,21,87,305. Here, first 8 is in ten thousand place and second eight is in crore place.

For first 8, the place value is 80,000

For second 8, the place value is 8,00,00,000

The sum of place values will be:

80000000+80,000 = 8,00,80,000

Hence, the sum of the place values of 8 in 8,21,87,305 is 8,00,80,000.

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

if x = 1, then the answer is 3.5