Question

Give the values of a, b, and c needed to write the equation's standard form. (5 + x)(5 - x) = 7 A = 1; B = 0; C = -18 A = 25; B = 0; C = -1 A = -1; B = 0; C = 25

Answer 1

do you know what is the standard form of an equation ?

Answer 2

ax +by =c

Answer 3

do you know formula of difference of squares ?

Answer 4

Standard eqn form means---> \(ax^2+bx=-c\)

Answer 5

Ohhh

Answer 6

Step 1 : Expand this first \((5+x)(5-x)=7\)

Answer 7

u will get
\(25+5x-5x-x^2=7\)

Answer 8

Step 2 : Rearrange in standard eqn form \(ax^2+bx=-c\)

Answer 9

\(x^2+0x=18\)

Answer 10

Step 3 : Compare the values to find a,b and c

Answer 11

\(\color{red}{1}x^2+\color{blue}{0}x=\color{green}{18}\) compare with \(\color{red}{a}x^2+\color{blue}{b}x=\color{green}{-c}\)

Answer 12

Therefore,
\(a=1\)
\(b=0\)
\(c=-18\)

Answer 13

Ohhh

Answer 14

There is another method to find the correct values of A,B and C

Answer 15

Just simply substitute the value of A,B and C into this eqn \(Ax^2+Bx=-C\)

Answer 16

If the eqn is equal to \(1x^2+0x=-18\)

Therefore,that is the answer

Answer 17

Oof, ok Thanks!

Answer 18

Yw! ^