Sagot :
A= (4x - 6)² - (3x + 2)(3x - 2)
=16x²-48x+36-(9x²-4)
=16x²-48x+36-9x²+4
=7x²-48x+40
B= (3 - 5x)²
=9-30x+25x²
C=(2x + 4)²
=4x²+16x+16
D=(8x + 3)(8x - 3)
=64x²-9
=16x²-48x+36-(9x²-4)
=16x²-48x+36-9x²+4
=7x²-48x+40
B= (3 - 5x)²
=9-30x+25x²
C=(2x + 4)²
=4x²+16x+16
D=(8x + 3)(8x - 3)
=64x²-9
A= 4x² + 6² - 2 X 4x X 6 - (3x + 2) (3x - 2) A=16x² + 36 - 48x - (3x)² - 2² A= 7x² + 32 - 48x B= 3² + 5x² - 2 X 3 X 5x B= 9 + 25x² - 30x
C= 2x² + 4² + 2 X 2x X 4
C= 4x² + 16 + 16x
D= 8x² - 3²
D= 64x² - 9
C= 2x² + 4² + 2 X 2x X 4
C= 4x² + 16 + 16x
D= 8x² - 3²
D= 64x² - 9