2,9*3 1/3 - 0,07*3/4=0,899
1) 2 9/10 * 1/3=29/10*1/3=29/30
2) 9/100 * 3/4 = 27/400
3) 29/30 - 27/400 = 1160/1200 - 81/1200=1079/1200 ≈ 0,899
(36-x")+2x-8+12=0. 36-x"-2x+8-12=0. -x"-2x+32=0. D=b"-4ac=4+128=132
A) m^2-9=(m+3)(m-3)
б) 4-a^2c^2=2^2-(ac)^2=(2-ac)(2+ac)
в) x^3+8=(x+2)(x^2-8x+64)