Réponse :
Bonsoir
Explications étape par étape
D = 25x^2 - 30x + 9 + 4 - 9x^2
D = 16x^2 - 30x + 13
E = 64x^2 - 1 - 4x^2 - 28x - 49
E = 60x^2 - 28x - 50
F = 16x^2 - 40x + 25 - 64x^2 - 32x - 4
F = -48x^2 - 72x + 21
A= 3x²-2*3x*2+2²= 9x²-12x+4
B= 7²+2*7*4x+4x²= 49+56x+16x²= 16x²+56x+49
C= 5x²-3²= 25x²-9
D= 5x²-2*5x*3+3²= 25x²-30x+9
4²-2*4*9x+9x²= 16-72x+81x²
25x²-30x+9+16-72x+81x²= 106x²-102x+25
E= 8x²-1²= 64x²-1
2x²+2*2x*7+7²= 4x²+28x+49
64x²-1- 4x²+28x+49= 60x²+28x+48
F= 4x²-2*4x*5+5²= 16x²-40x+25
8x²+2*8x*2+2²= 64x²+32x+4
16x²-40x+25-64x²+32x+4= -48x²-8x+29
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Verified answer
Réponse :
Bonsoir
Explications étape par étape
D = 25x^2 - 30x + 9 + 4 - 9x^2
D = 16x^2 - 30x + 13
E = 64x^2 - 1 - 4x^2 - 28x - 49
E = 60x^2 - 28x - 50
F = 16x^2 - 40x + 25 - 64x^2 - 32x - 4
F = -48x^2 - 72x + 21
Réponse :
A= 3x²-2*3x*2+2²= 9x²-12x+4
B= 7²+2*7*4x+4x²= 49+56x+16x²= 16x²+56x+49
C= 5x²-3²= 25x²-9
D= 5x²-2*5x*3+3²= 25x²-30x+9
4²-2*4*9x+9x²= 16-72x+81x²
25x²-30x+9+16-72x+81x²= 106x²-102x+25
E= 8x²-1²= 64x²-1
2x²+2*2x*7+7²= 4x²+28x+49
64x²-1- 4x²+28x+49= 60x²+28x+48
F= 4x²-2*4x*5+5²= 16x²-40x+25
8x²+2*8x*2+2²= 64x²+32x+4
16x²-40x+25-64x²+32x+4= -48x²-8x+29
Explications étape par étape