Решите уравнение : 3. (6х-1)^2-(3-8x)(3+8x)=(10x+1)^2. 4. 5(x+2)^2+(2x-1)^2-9(x+3)(x-3)=22.

(6х-1)^2-(3-8x)(3+8x)=(10x+1)^2. (6x-1)²-(3-8x)(3+8x)-(10x+1)²=0 (6x-1)²+(8x-3)(8x+3)-(10x+1)²=0 (36x²-12x+1)+(8x-3)(8x+3)-(100x²+20x+1)=0 (36x²-12x+1)+(64x²-9)-(100x²+20x+1)=0 36x²-12x+1+64x²-9-100x²-20x-1=0 -32x-9=0 -32x=9 32x=-9 x=(-9)÷32 x=-9/32 5(x+2)^2+(2x-1)^2-9(x+3)(x-3)=22 5(x+2)²+(2x-1)²-9(x+3)(x-3)-22=0 5(x²+4x+4)+(4x²-4x+1)-9(x+3)(x-3)-22=0 (5x²+20x+20)+(4x²-4x+1)-(9x+1)-(9x+27)(x-3)-22=0 (5x²+20x+20)+(4x²-4x+1)-(9x²-27x+27x-81)-22=0 (5x²+20x+20)+(4x²-4x+1)-(9x²-81)-22=0 5x²+20x+20+4x²-4x+1-9x²+81-22=0 16x+80=0 16x=-80 x=(-80)÷16 x=-5