Question

what should be subtracted to the polynomial x2-16x+30, so that 15 is the zero of the resulting polynomial?

Answer 1

(15)^2-16(15)+30-y=0

225-240+30=y

225-210=y

15=y or y=15 where y is the number to be subtracted from the polynomial.

Answer 2

Answer:

${\huge {{\tt {\color{navy}{15}}}}}$

Step-by-step explanation:

${\ { {\tt {\color{black}{ {15 }^{2} - 16 \times 15 + 30 }}}}}$

${{ {\tt {\color{black}{225 - 240 + 30}}}}}$

${{ {\tt {\color{black}{225 - 210}}}}}$

${\huge { {\tt {\color{black}{15}}}}}$

"hopes its helps you"