4. Find two consecutive natural numbers, the sum of whose squares is 145.

5. The sum of two natural numbers is 12 and the sum of their squares is 74. Find the numbers.

6. Find two consecutive multiples of 3 whose product is 270.

# 4. Find two consecutive natural numbers, the sum of whose squares is 145.

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Answer:4-It i s given that the sum of square of those numbers is 145. Therefore, x² + (x+1)² = 145.