Question

For the polynomial mx²-2x+3 if p(-1)=7 then find m.

Answer 1

$\textbf{Answer :}$

Given that,

p (m) = mx² - 2x + 3

Now, p (- 1) = 7

or, m (- 1)² - 2 (- 1) + 3 = 7

or, m (1) + 2 + 3 = 7

or, m + 5 = 7

or, m = 7 - 5 = 2

Therefore, the value of m is $\textbf{2}$

#$\textbf{MarkAsBrainliest}$

Answer 2

Answer:

For the polynomial mx²-2x+3 if p(-1)=7

then m =2

Step-by-step explanation:

polynomial mx²-2x+3

p(x) = mx²-2x+3

if x = -1

p(-1) = m(-1)² - 2(-1) + 3

=>p(-1) = m + 2 + 3

=>p(-1) = m + 5

p(-1)=7  given

comparing both

m + 5 = 7

subtracting 5 from both sides

m = 2