Question

плиз дам 35 баллов хелп

Answer 1

Объяснение:

7. (3x+1)(4x-2)-6(2x-1)²+14 = 12x²-6x+4x-2-24x²+24x+6+14 = -12x²+22x+18

8.

$frac{(a^{2}+1)^{2}-(a^{2}-1)^{2}}{a^{2}} = 4\\frac{a^{4}+2a^{2}+1-a^{4}+2a^{2}-1}{a^{2}} = 4\\frac{4a^{2}}{a^{2}} = 4\4=4$

Answer 2

Ответ:

Объяснение:

7. (3x+1)(4x-2)-6(2x-1)²+14 = 12x²-6x+4x-2-24x²+24x+6+14 = -12x²+22x+18

8.

frac{(a^{2}+1)^{2}-(a^{2}-1)^{2}}{a^{2}} = 4\\frac{a^{4}+2a^{2}+1-a^{4}+2a^{2}-1}{a^{2}} = 4\\frac{4a^{2}}{a^{2}} = 4\4=4