(-45)(-45)-4
Cancel the common factor of 5.
Move the leading negative in -45 into the numerator.
-45⋅-45-4
Factor 5 out of -45.
-45⋅(5(-9))-4
Cancel the common factor.
-45⋅(5⋅-9)-4
Rewrite the expression.
-4⋅-9-4
-4⋅-9-4
Multiply -4 by -9.
36-4
36-4
Subtract 4 from 36.
32
Evaluate (-4/5)(-45)-4