Question

calculeaza:
a) (3+√2)(3-√2)=
b) (3√2-1)(3√2+1)=
c) (√3+√7)(√7-√3)=
d) (3x-2y)(3x+2y)=
coroana man :))

Answer 1

a) (3+√2)(3-√2)=9-2=7
b) (3√2-1)(3√2+1)=18-1=17
c) (√3+√7)(√7-√3)=(√7+√3)(√7-√3)=7-3=4
d) (3x-2y)(3x+2y)==9x²-4y²