Final answer:
To write + √18 in the form b√2, we simplify the square root of 18 to get 3√2. So, + √18 can be written as + 3√2.
Step-by-step explanation:
To write + √18 in the form b√2, we need to simplifying the square root of 18. We know that 18 can be factored as 9 * 2. Taking the square root of 9 gives us 3, so we can rewrite √18 as 3√2. Then, we can write + √18 as + 3√2.
Learn more about Simplifying square roots