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b) (2a+2)²= 4a² + 8a + a
c) (5z-4)²= 25z² - 40z + 16
d) (5z+1)(5z-1)= 25z² + 1
e)(2+3x)³= 8 + 18x + 54x + 27x³
f) (4-3x)³= 64 - 144x + 108x - 27x³
b)(2a+2)²=4a²+8a+4
c)(5z-4)²=25z²-40z+16
d)(5z+1)(5z-1)=25z²-1
e)(2+3x)³=8+30x+27x³
f)(4-3x)³=64+36x²+48x