Question

please answer help me mathematics questions​

Answer 1

Answer:

1.a)6561

Step-by-step explanation:

we can write it in the form of

(80+1)²=(a+b)²=a²+b²+2ab

=(80)²+(1)²+2(80)(1)

=6400+1+160

=6561

thanku

Answer 2

Answer:

See this.

Step-by-step explanation:

I hope this will help you..Please mark this answer as the brainliest.