Question

salut
completati astef incit propoziti obtinuta sa fie adevarata 
a)$(....-t ^{2} )(...+t ^{2} )=64z ^{2} -t ^{4}$
b)$( \sqrt3a-b)(....+b)=3a ^{2} -b ^{2}$
c)$( \frac{1}{2} -....)( \frac{1}{2} a+....)=...-25b ^{4}$
d)

Answer 1

a) (8z-t²)(8z+t²)= 64z²- $t^{4}$
b) (√3a-b)(√3a+b)= 3a²-b²
c) (1/2-5b²)(1/2a+5b²)=1/4a- 25 $b^{4}$

Answer 2

[tex]a) (8z-t^2)(8z+t^2)=64z^2-t^4 [/tex]

$b)( \sqrt{3} a-b)( \sqrt{3}a+b )=3a^2-b^2$

$c)( \frac{1}{2}a-5b^2 )( \frac{1}{2} a+5b^2)= \frac{1}{4} a^2-25b^4$