Question

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Answer 1

Відповідь:

1) х²+14х+49-х²-19х+5х+95 = 144

2) 9а²+12а+4+8+12а-12а-18а²+9а²-12а+4=4+8+4=16

3) 1-4х+4х²-2(4х²-1)+4х²+4х+1=2+8х²-8х²+2=4

4) 2b²+6ab-6ab-18a²+9a²-6ab+b²+b²+6ab+9a²-4b²+16= 16

5) a²+2ab+b²+b²-2ab+a²+2b²-2a²-4b²+36=36