If (a+b+c+d)(a–b-c+d)=(a+b-c-d)(a-b+c-d) show that :
a/b = c/d
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a²-ab-ac+ad+ab-b²-bc+bd+ac-bc-c²+cd+ad-bd-cd-d²=
a²-ab+ac....................
a/b = c/d
Answered by
2
Answer:
a²-ab-ac+ad+ab-b²-bc+bd+ac-bc-c²+cd+ad-bd-cd-d²=
a²-ab+ac.
Step-by-step explanation:
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