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Solve for x. x2−9=55 Question 1 options: ±32 ±8 ±46−−√ ±4

Solve for x. x2−9=55 Question 1 options: ±32 ±8 ±46−−√ ±4
asked 84.3k views
20 votes
Solve for x.

x2−9=55
Question 1 options:

±32

±8

±46−−√

±4

asked
User Chris Bosco
by
8.1k points

1 Answer

7 votes

Answer:

x²-9=55

Like terms

x²=55+9

x²=64

x²-64=0

factorise

(X-8)(X+8)=0

X=8 or X =-8.

answered
User Zakeeyah
by
7.8k points
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