Simplify(ab - c)2 + 2abc

The given expression is(ab - c)2 + 2abc= (ab)2-2(ab)(c) + (c)2 + 2abc= a2b2-2abc + c2 + 2abc= a2b2 + c2Therefore, (ab - c)2 + 2abc = a2b2 + c2

Q84 of 128 Page 224

Simplify
(ab - c)² + 2abc

The given expression is

(ab - c)² + 2abc

= (ab)²-2(ab)(c) + (c)² + 2abc

= a²b²-2abc + c² + 2abc

= a²b² + c²

Therefore, (ab - c)² + 2abc = a²b² + c²

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(2.5m + 1.5q)² + (2.5m - 1.5q)²

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(x² - 4) + (x² + 4) + 16

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(a - b) (a² + b² + ab) -(a + b) (a² + b² - ab)

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(b²-49)(b + 7) + 343