Question

Subtracting -3x² – 1 from 2x + 1, we get ?
(a) – 3x² + 2x – 2
(b) – 3x² + 2
(c) 3x² + 2x + 2
(d) 3x² – 2

Answer 1

Answer:

Given question :

$subtracting \: ( - {3x}^{2} - 1) \: from \: (2x + 1)$

Solution :

$(2x + 1) - ( { - 3x}^{2} - 1)$

$2x + 1 + {3x }^{2} + 1$

${3x}^{2} + 2x + 1 + 1$

${3x}^{2} + 2x + 2$

$ans. \: \: c) {3x}^{2} + 2x + 2$

Hope it helps.

Answer 2

Answer:

2x+1-(-3x²-1)

=2x+1+3x²+1

=3x²+2x+2