Question

c) (t²-z²)²;va rog mult​

Answer 1

Răspuns:

$= t {}^{4} - 2t {}^{2} z {}^{2} + z {}^{4}$

Explicație pas cu pas:

$(t {}^{2} - z {}^{2} ) {}^{2}$

$= (t {}^{2} ) {}^{2} - 2t {}^{2} z {}^{2} + (z {}^{2} ) {}^{2}$

$= t {}^{2 \cdot2} - 2t {}^{2} z {}^{2} + z {}^{2 \cdot2}$

$=\boxed{ {t}^{4} - 2t {}^{2} z {}^{2} + z {}^{4}}$

Answer 2

Răspuns:

(t²-z²)²=

(t²)²-2t²z²+(z²)²=

t⁴-2t²z²+z⁴