Question

find the value of expression
if x=2 5x2-3x+7

Answer 1

Question ➡

Find the value of expression 5x2-3x+7 if x = 2

Answer ➡

[substitute 2 in place of x]

${5(2)}^{2} - 3(2) + 7 \\ \\ 5(4) - 6 + 7 \\ \\ 20 - 6 + 7 \\ \\ 14 + 7 \\ \\ 21$

Therefore value of the expression = 21

Verification ➡

${5(2)}^{2} - 3(2) + 7 = 21\\ \\ 5(4) - 6 + 7 = 21 \\ \\ 20 - 6 + 7 = 21\\ \\ 14 + 7 = 21 \\ \\ 21 = 21 \\ \\ LHS=RHS \\ \\ Hence \: proved$

Answer 2

answer:

21 =21

Step-by-step explanation:

answer is

21 =21