Question

solve this mathematics

chapter - 12

fundamental concept and operation on algebraic expression

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Answer 1

x³ - 8x² + 14x - 7

= x³ + 14x - 8x² - 7

Substituting the x with -1,

= -1³ + 14(-1) - 8(-1)² - 7

= -1 + (-14) - 8(1) - 7

= -1 - 14 - 8 - 7

= -30

(The 3rd step might be verified with a calculator.)