Adrianogwenyid
Answered

SPOT THE ERRORS AND EXPLAIN IN WRITING WHAT MUST BE DONE TO DO IT CORRECTLY.
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SPOT THE ERRORS AND EXPLAIN IN WRITING WHAT MUST BE DONE TO DO IT CORRECTLY class=

Sagot :

Eunoia98id

STUDENT A is wrong. It should be:

9x³ - 2x² + 7x - 4

=9(-2)³ - 2(-2)² + 7(-2) - 4

=9(-8) - 2(4) + 7(-2) - 4

= -72 - 8 - 14 - 4

= -98

STUDENT B is also wrong. It should be:

9x³ - 2x² + 7x - 4

=9(3)³ - 2(3)² + 7(3) - 4

=9(27) - 2(9) + 21 - 4

= 243 - 18 + 21 - 4

=242