A mans age after, 15 years became square of his age before 15 years..
a, If x is the present age, form a second degree equation..
b, calculate the present age..
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A mans age after, 15 years became square of his age before 15 years..
a, If x is the present age, form a second degree equation..
b, calculate the present age..
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Step-by-step explanation:
[tex]let \: present\: age \: be \: x[/tex]
[tex](x - 15 )^{2} = {x}^{2} \\ {x}^{2} + 225 - 30x = {x}^{2} \\ {x}^{2} - {x}^{2} - 30x = - 225 \\ - 30x = 225 \\ x = \frac{ - 225}{ - 30} = \frac{15}{2} [/tex]