Question

if x =2, a=1, b=3, 3x²- 8a-b+4x²+11ab​

Answer 1

Answer:

Given:

x = 2

a = 1

b = 3

$3 {x}^{2} - 8a - b + 4 {x}^{2} + 11ab \\ = 3 \times {2}^{2} - 8 \times 1 - 3 + 4 \times {2}^{2} + 11 \times 1 \times 3 \\ = 3 \times 4 - 8 -3- 4 \times 4 + 33 \\ = 12 - 8 -3- 16 + 33 \\ = 12 - 24 + 33 \\ = 45 - 27 \\ = 18$

Answer 2

Answer:

GIVEN:

X=2,A=1,B=3

TO FIND:

VALUE OF THE EXPRESSION:

$3 {x}^{2} - 8a - b + 4 {x}^{2} + 11ab$

HOW TO FIND:

JUST PLUG THE VALUE OF X,A AND B INTO THE EXPRESSION.

SOLUTION:

$3 \times {2}^{2} - 8 \times 1 - 3 + 4 \times {2}^{2} + 11 \times 1 \times 3 \\ \\ = 12 - 8 - 3 + 16 + 33 \\ \\ = 1 + 49 \\ \\ = 50$