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(a+b) (c-d) +(a-b) (c+d) +2(ab+cd)

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(a+b) (c-d) +(a-b) (c+d) +2(ab+cd)

Posted by Saravana Pothi 4 years, 11 months ago

CBSE > Class 08 > Mathematics

1 answers

Diksha Laniya 4 years, 11 months ago

ANSWER Δ=∣∣∣∣∣∣∣∣2a+b+c+dab+cda+b+c+d2(a+b)(c+d)ab(c+d)+cd(a+b)ab+cdab(c+d)+cd(a+b)2abcd∣∣∣∣∣∣∣∣ =∣∣∣∣∣∣∣∣1c+dcd1a+bab000∣∣∣∣∣∣∣∣∣∣∣∣∣∣∣∣1a+bab1c+dcd000∣∣∣∣∣∣∣∣ Row X Row multiplication =0

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CBSE > Class 08 > Mathematics