Question

guys plz help me with its ans plz give an explanation too ​

Answer 1

$\huge\mathbb\red{ANSWER}$

given

value of t is -1

by putting value in equation

$2 \: + - 1+ 2 \: { (- 1}^{2} ) - ({ - 1}^{3} ) \\ \\ 2 - 1 + 2(1) + 1 \\ \\ 2 - 1 + 2 + 1 \\ \\ 1 + 2 + 1 \\ \\ 4$

so answer is 4

$\huge\mathbb\green{EXPALNATION}$

• 1st we put value of t in given equation

• then as we know square of -ve number is +ve the -1² = 1

• also we know that cube of -ve number is -ve ie -1³ = -1

• as we also now that 2 - 1 = 1 then we add 1 2 and 1 to get 4 as answer

hope it helps you

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