5. If an operation is defined as a *b= a + b * a - b, then an
(a) 2 * (-3) (b) (-5) * (-7) (c) {-4* 7}*(-2)
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Answer:
a) 2*(-3) = 2*-3 = -6
b) (-5)*(-7) =firstly multiply -5*-7 =+35 (I know -,- = +) then, ans is in +.
c) {-4*7}*(-2) firstly bracket work -4*-7=-28
then -28*-2 = + 56 (I know -,- = +)
I hope I help uh.
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