A certain element has a half life of 4.5 billion years. a. You find a rock containing a mixture of the element and lead. You det
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Answer:
Step-by-step explanation:
Given equation:
Factor out 3 from the first 2 terms:
Divide the coefficient of x by 2 and square it: (-3 ÷ 2)² = 9/4
Add this inside the parentheses and subtract the distributed value of it outside the parentheses:
Factor the parentheses and combine the constants:
First you had to expanded form.
Finally you can also add by similar to elements.
Final answer:
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-Charlie