PLEASE HELP ME WITH MATH. Enter the correct sum in each box. Use the number line to help you.

A vertical number line from negative 7 to 3 with tick marks at intervals of 1 tenth

(A) 4.6 + (–5.9)

(B) –4.4 + 6.2

(C) 2.1 + 0.5

(D) –3.8 + (–1.3)

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1

answers

\3. yes the presentation (i.e. odd numbers being written as differences of two squares) is possible for all odd natural number however the presentation may not be unique. for example,  57=112−82=292−28257=112−82=292−282.

\4. 2 can't be written as a difference of two squares because 4-1=3 and 1-1=0 and the difference of squares grows to integers larger that 3.

can i get some in proving questions 1 and 2?