Question

if. p= -2,then the value of (2p3-3p2-4p-7) is and answer is coming-3 chapter name -algebraic expression Class-7​

Answer 1

Answer:

Answer will be 1, 2p3 & - 3p2 will cancelled & remaining -4(-2) -7 will give result 1

Answer 2

Answer:

Question :-

if. p= -2,then the value of (2p3-3p2-4p-7) is

Required Answer :-

${2p}^{3} - {3p}^{2} - 4p - 7$

$= {2 \times ( - 2)}^{3} - {3( - 2)}^{2} - 4 \times ( - 2) - 7$

$= 2 \times - 8 - 3 \times 4 + 8 - 7$

$= - 16 - 12 + 8 - 7$

$= - 28 + 1$

$= - 27$