Question

plzz Its Urgent


Simplify. (1) (x - 2y + 3)2 + (x + 2y - 3)2


(2) (3k - 4r -2m)2 – (3k + 4r - 2m)2


(3) (7a - 6b+ 5c)2 + (7a + 6b-5c)2
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Answer 1

Answer:

[i] (2x - 4y +6) + (2x +4y - 6)

2x - 4y +6 +2x + 4y - 6

Ans. : 4x (because the - 4y and +4y cancelled themselves and +6 - 6= 0)

[ii] (6k - 8r - 4m) - (6k +8r - 4m)

6k - 8r - 4m - 6k - 8r + 4m

Ans. : - 16r (reason as same as first question)

[iii] (14a - 12b +10c) +( 14a +12b - 10c)

14a - 12b +10c +14a +12b - 10c

Ans. : 28a (reason is as previous answer)