Question

Without Squaring Find the Value of: 89² - 88².
with solution.
don't post o don't know for points
only post the answer.​

Answer 1

Answer:

Step-by-step explanation:

89²=(90-1)²

=90²+1²-2×90×1

=8100+1-180

=7920

88²= (90-1)²

=90²+2²-2×90×2

=8100+4-360

=7744

Hope it helps