Well all the factors of 32 are 1 and 32, 2 and 16, 4 and 8.
Arc FE: 76°
arc DEF: 180°
arc CFD: 284°
arc DFE: 256°
Here, regrouping is basically carrying.
64+43 shown vertically would be:
64
+43
-------
107
4+3 is 7, so seven is in the ones place, but that's not the point.
60+40 is 100, so you regroup by carrying the one to the hundreds place.
Hope I helped!
Two numbers that add up to 2 and multiply to -35
-5 and 7
Rewrite the expression using the above;
<u>(x - 5)(x + 7)</u>