The roots of the given quadratic equation x² - 10x + 21 = 0 is x = 3, 7.
A quadratic equation is the second-order degree algebraic expression in a variable.
The standard form of this expression is ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.
Write equation
x² - 10x + 21 = 0
Factor
(x - 7)(x - 3) = 0
Find roots
x - 7 = 0
x = 7
x - 3 =0
x = 3
Therefore, the roots of the given equation is x = 3, 7.
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