Question

Using a2-b2=(a+b) (a-b) find 51square-49s

Answer 1

Answer:

51² - 49² = 200

Step-by-step explanation:

${a}^{2} - {b}^{2} = (a + b)(a - b)$

${51}^{2} - {49}^{2} = (51 + 49)(51 - 49) \\ {51}^{2} - {49}^{2} = (100)(2) \\ {51}^{2} - {49}^{2} =200$