Question

Evaluate 20.09×19.07 products by using suitable identity. Find Indreact

Answer 1

Answer:

383 .11

Step-by-step explanation:

20.09 × 19.07

(19.58 + 0.51)(19.58 - 0.51)

$= (19.58 + 0.51)(19.58 - 0.51) \\ = {(19.58)}^{2} - {(0.51)}^{2} \\ = 383.37 - 0.26 \\ = 383 .11$