3 years ago

Solve the equation x^2 = -8x-7 by factoring

Mathematics

2 answers:

FinnZ [79.3K]3 years ago

8 0

Answer:

x = -7 and -1

Step-by-step explanation:

Move the right side of the equation over to the left;

x^2+8x+7 = 0; Factor

(x+7)(x+1)=0 ; Solve for x;

x = -7 and -1

Lostsunrise [7]3 years ago

3 0

Answer:

x= -1,-7

Step by step:

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Step-by-step explanation:

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Find the nth term, a n, of the given arithmetic sequence. a^1 = 75, d = –8, n = 11

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Step-by-step explanation:

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Read 2 more answers

Given a triangle MTN, prove that

cupoosta [38]

Answer:

$\angle m + \angle t + \angle n = 180$

Step-by-step explanation:

Required

Show that:

$\angle m + \angle t + \angle n = 180^o$

To make the proof easier, I've added a screenshot of the triangle.

We make use of alternate angles to complete the proof.

In the attached triangle, the two angles beside $\angle m$ are alternate to $\angle t$ and $\angle n$

i.e.

$\angle 1 = \angle t$

$\angle 2 = \angle n$

Using angle on a straight line theorem, we have:

$\angle 1 + \angle m + \angle 2 = 180$

Substitute values for (1) and (2)

$\angle t + \angle m + \angle n = 180$

Rewrite as:

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