Question

Use expansion formula to find the values of the (997) square in a easy tricks

Answer 1

Step-by-step explanation:

(1000- 3)square

${1000}^{2} - 2 \times 1000 \times 3 + {3}^{2}$

1000000-6000+9= 994009

Answer 2

Answer:

use ( a + b)^2

according to formula separate the given number = 997

                                                                                  = 900 + 97

therefore according to formula = (a + b)^2

                                                    = a^2 + b^2 + 2ab

                                                    = 900^2 + 97^2 + 2*900*97

                                                    = 810000 + 9409 + 174600

                                                     = 994009

hope it helps.....

pls thank my answer and mark as brainliest