Answer:
-4
Step-by-step explanation:
('+')('-') = ('-')
Therefore,
(+2)(-2) = (-4)
Is this 9x+4=5+5x or is it 9x•4=5•5x?
Answer:
√20
Or
2√5
Step-by-step explanation:
It is very easy just substitute
It will be:
(4)^2 must be done first.
That’ll give you 16. (4x4)
16 x -2= -32
-32+4= -28