2)
2b2 - 4b + 2
185 – 24
-
12b2 - 125
185 – 24

2b2−4b+(2)(185)−24−12b2−(125)(185)−24

=2b2+−4b+370+−24+−12b2+−23125+−24

Combine Like Terms:

=2b2+−4b+370+−24+−12b2+−23125+−24

=(2b2+−12b2)+(−4b)+(370+−24+−23125+−24)

=−10b2+−4b+−22803

=−10b2−4b−22803

the indirect evidence that supports that the bubbles so generated are oxygen is that the bubbles in the plant increases when it moves towards the brighter light.