Question

verify that -4 is zero of the polynomial P of x is equal to 2 x cube + 6 X square + 7 x 60​

Answer 1

Step-by-step explanation:

hope it will help you.....

Answer 2

${2x}^{3} + {6x}^{2} + 420 \\ 2 \times - {4}^{3} + 6 \times - { 4}^{2} + 420 \\ 2 \times - 64 + 6 \times 16 + 420 \\ - 128 + 96 + 420$

Nnno...........