Question

Plz tell 9th question it's urgent

Answer 1

first put x= (1/2)
= 3(1/2)^2-4(1/2)+7
= 3/4-2+7
= 3-8+28/4
=23/4
secondly put x = -2
= 3(-2)^2-4(-2)+7
= 12+8+7
= 27
hope it helps you

Answer 2

bonjour dear!

question:-  IF P(X) = 3X²-4X+7 FIND P(1/2) AND P(-2)

ANSWER

FIRST STEP U NEED TO TAKE P(1/2)

THEN, U NEED TO SUBSITUTE 1/2 IN THE PLACE OF X

⇒P(X) = 3X²-4X+7

⇒P(1/2) = 3*(1/2)² - 4*1/2 +7

⇒ 3*1/4 - 2 +7

⇒ 3/4 - 2 +7

⇒ 3/4 + 5

SO NOW WE SHOULD TAKE LCM ↓

⇒3*1/4*1  +  5*4/1*4

⇒ 3/4 +20/4

⇒ 23/4

2ND STEP WE SHOULD P(-2)]

SUBSITUTE -2 IN THE PLACE OF X

P(X) = 3X²-4X+7

P(-2) = 3*(-2)² - 4*-2 +7

= 3*4 + 8 +7

= 12+8+7

⇒ 27

HOPE THIS HELPS

KEEP SMILING

:)