Take the square root of both sides.
x=the square root of 10.
It is an irrational number.
Approximately 3.15
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x2 + 13x = -30 ∴ x2 + 13x + 30 = 0 ∴ (x + 3)(x + 10) = 0 ∴ x ∈ {-3, -10}
x=18
x2-10 = 0 x2 = 10 x = the square root of 10
To solve for x: 2x2 + 10 = 58 2x2 = 48 x2 = 24 x = √24 x = √4 × √6 x = 2√6
(2x)ysquared