Question

(a + b) (c- d) + (a - b) (c + d) +2 (ac + bd)
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Answer 1

Step-by-step explanation:

(a+b)(c-d)+(a-b)(c+d)+2(ac+bd)

Opening the brackets we have;

= ac-ad+bc-bd+ac+ad-bc-bd+2ac+2bd

= 4ac

If this helps please mark as brainliest