bonjour
1) (4x-3)² = 16x²-24x+9
2) (5x-2)² = 25x²-20x+4
3) (3x-8)(3x+8) = 9x²-64
4) (3x+2)²-(x-3)² = 9x²+12x+4 -(x²-6x+9) =9x²+12x+4-x²+6x-9 =8x²+18x-5
5) (2x+1)(2x-1)+(1-3x)² = 4x²-1+1-6x+9x²= 13x²-6x
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bonjour
1) (4x-3)² = 16x²-24x+9
2) (5x-2)² = 25x²-20x+4
3) (3x-8)(3x+8) = 9x²-64
4) (3x+2)²-(x-3)² = 9x²+12x+4 -(x²-6x+9) =9x²+12x+4-x²+6x-9 =8x²+18x-5
5) (2x+1)(2x-1)+(1-3x)² = 4x²-1+1-6x+9x²= 13x²-6x