Question

Find lx+yl and lx-yl when x=4 and y=-3

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Answer 1

Given x=4,y=-3

Substitute in the eqauations.

x+y

4+(-3)

(+)×(-)=(-)

4-3

+1

x-y

4-(-3)

(-)×(-)=(+)

4+3

+7

|x+y|=+1

|x-y|=+7

| | means Modulus

It's function is to keep + as + and send - as +