OpenStudy (anonymous):

( a-b)^2 ≠ 4^2 + 5^2

7 years ago
OpenStudy (anonymous):

$$(a+b)^2≠4^2 + 5^2$$

7 years ago
OpenStudy (anonymous):

try expanding the Left-hand-side first. so the equation in terms of variables is:

7 years ago
OpenStudy (anonymous):

$$(a+b)^2 \neq (a)^2 + (b)^2$$

7 years ago

In particular, this is because: $$(a + b)^2 = (a + b)(a + b)$$ Which evaluates to something very different than $$a^2 + b^2$$.

7 years ago