Question

answer me fast please​

Answer 1

Step-by-step explanation:

$(3 - \sqrt{7} ).(5 + \sqrt{3} ) \\ = (3 - 7 \times \frac{1}{2} ).(5 + 3 \times \frac{1}{2} ) \\ = (3 - 3.5).(5 + 1.5) \\ = ( - .5) \times (6.5) \\ = - 3.25$

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Answer 2

Answer:

-3.25 is the answer

hope it helps you