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Pie
3 years ago
6

Hey can you please help me posted picture of question:)

Mathematics
2 answers:
kodGreya [7K]3 years ago
4 0
The answers are A and D
VLD [36.1K]3 years ago
3 0
Answer:
The roots are:
\sqrt{10} - 5 and -\sqrt{10} - 5

Explanation:
First, we will need to expand the bracket on the left and then put teh equation i standard form which is:
ax² + bx + c = 0

This can be done as follows:
(x+5)² = 10
(x)² + 2(x)(5) + (5)² = 10
x² + 10x + 25 - 10 = 0
x² + 10x + 15 = 0

By comparison, we can find that:
a = 1
b = 10
c = 15

Now to get the roots, we would need to use the quadratic formula shown in the attached image.

By substitution, we would find that:
either x = \sqrt{10} - 5
or x = - \sqrt{10} - 5

Hope this helps :)

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