Given a+b=7 and a-b=3, find the following 3^a÷3^b
1 answer:
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<h3>Answer:</h3>
In this case, the digit in the hundredths place is a . We need to take a look at the next digit to the right, which is a
.
Since it is or less, we can simply replace the
and the rest of the digits to the right with
s to round it.
If the was
or more, we would round the
up to
and replace the remaining digits to the right with
s.
Answer:
Option D. It's a perfect square trinomial.
Step-by-step explanation:
(a) 36x² - 4x + 16
= (6x)² - 2(2x) + (4)²
It's not a perfect square trinomial
(b) 16x² - 8x + 36
= (4x)² - 2x(4x) + (6)²
It's not a perfect square trinomial
(c) 25x² + 9x + 4
= (5x)² + 2 + (2)²
It's not a perfect square trinomial
(d) 4x² + 20x + 25
= (2x)² + 2(10x) + (5)²
= (2x+5)²
It's a perfect square trinomial.