Answer:
(12-7x)
Step-by-step explanation:
144 − 49x²
by observation, we can see that 144 = 12² and 49 = 7²
hence we can rewrite the equation
144 − 49x²
= 12² - 7²x²
= 12² - (7x)²
recall that the expression x² - y² = (x+y)(x-y)
hence,
12² - (7x)²
= (12 + 7x)(12-7x)
(12-7x) appears in the expression above, hence 12 -7x is a factor
Answer:
i'm not sure but i think its 7,14,21
Step-by-step explanation:
7,14,21
<span>(5a^2-4)*(25a^4+20a^2+16) is your answer</span>
You’re right, both of the pairs are similar
