Question

Without actually finding the square of the number find the value of 143square - 142square

Answer 1

Answer:

285

Step-by-step explanation:

${143}^{2} - {142}^{2} \\ = (143 - 142)(143 + 142) \\ = 1 \times 285$

its in a^2 - b^2 form

a^2 - b^2 = (a - b) (a + b)

hope you get your answer