Bonsoir,
1. 3x(1 + 2x)= 3x +6x²
2. 4a(1 - 5x)= 4a -20ax
3. 2x(1 + x) = 2x +2x²
4. - x(4x + 7) = -4x² -7x
5. 3(2x - 6) + 2(x - 1) = 6x -18 +2x -2 = 8x -20
6. 4(6 + x) - (3 - 5x) = 24 +4x -3+5x = 9x +21
Développer et réduire les expressions suivantes :
1. 3x(1 + 2x)= 3x+6x²
2. 4a(1 - 5x)= 4a-20ax
3. 2x(1 + x)= 2x+2x²
4. - x(4x + 7)= -4x²-7x
5. 3(2x - 6) + 2(x - 1)= 6x-18+2x-2= 8x-20
6. 4(6 + x) - (3 - 5x)= 24+4x-3+5x= 9x+21
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Verified answer
Bonsoir,
1. 3x(1 + 2x)= 3x +6x²
2. 4a(1 - 5x)= 4a -20ax
3. 2x(1 + x) = 2x +2x²
4. - x(4x + 7) = -4x² -7x
5. 3(2x - 6) + 2(x - 1) = 6x -18 +2x -2 = 8x -20
6. 4(6 + x) - (3 - 5x) = 24 +4x -3+5x = 9x +21
Verified answer
Bonsoir,
Développer et réduire les expressions suivantes :
1. 3x(1 + 2x)= 3x+6x²
2. 4a(1 - 5x)= 4a-20ax
3. 2x(1 + x)= 2x+2x²
4. - x(4x + 7)= -4x²-7x
5. 3(2x - 6) + 2(x - 1)= 6x-18+2x-2= 8x-20
6. 4(6 + x) - (3 - 5x)= 24+4x-3+5x= 9x+21