<u>ANSWER </u>
and
<u>EXPLANATION</u>
Given;
and
The augmented matrix of the two linear equation is given by;
We now perform row operations;
.
This gives us
Hence and
It was chord less sorry if wrong
So, three and seven combine to make 10. Becoming good at mental math can be achieved by noticing things like this. Your mind should automatically see 43 and 17, know that 3 plus 7 equals 10. So there you have 50 plus 10 plus 27. Which is very simple to do. Your final answer will be 87.
Hello :
z = - 4 - <span>√2 i
</span><span>|z| = </span>√((-4)²+(√2)²) =√(16+2)=√18=3 √2
first get all variables on the same side, then use elimination to solve.
x = -3
y = -11