Question

If r=-3, find the value of: -7r³-5r²+3r+10.​

Answer 1

$\bold\color{red}{Answer }$

$\sf \implies-7r³-5r²+3r+10 \\ \sf \implies \: - 7. {3}^{3} - 5. {3}^{2} + 3.3 + 10 \\ \sf \implies - 7 \times 27 - 5 \times 9 + 9 + 10 \\ \sf \implies \: - 189 - 45 + 19 \\ \sf \implies - 189 - 26 \\ \implies \sf - 215$

-215 is the answer