-525 and (35)(-15)
Step-by-step explanation:
You can calculate the result of this expression as follows:
(-7)(-15)(-5)=(-1)³(7×15×5)=-(7×15×5)=-525
as, (-1)^n=1 if n is even and (-1)^n=-1 if n is odd.
We already saw that -525 is equivalent to the expression. Furthermore:
(-7)(-15)(-5)=(-15)(-7)(-5)=(-15)(-1)²(7×5)=(-15)(7×5)=(-15)(35).
so the second expression is also equivalent.
You can discard the third and fourth answers because 115×5=575≠525. The first one is also discarded, because (-7)(75)=525≠-525.
