Question

9. What is the standard form of the quadratic equation 3x (x - 3) = 7?
a. 3x2 - 9x = 7
c. 3x2-3x + 7 = 0
b. 3x2-3x - 7= 0
d. 3x2 - 9x - 7 = 0​

Answer 1

Answer:

d) 3x^2-9x-7 is the standard form

Answer 2

$\red{ Standard \: form \: of \: 3x(x-3) = 7 }$

$= 3x \times x - 3x \times 3 = 7 \\= 3x^{2} - 9x - 7 = 0$

/* We know that */

$\blue{ Standard \: form \: a}\\\blue{ Quadratic \: equation : ax^{2} + bx + c = 0 , }\\\blue{ where , a,b,c \in R \: and \: a \neq 0 }$

Therefore.,

$Option \: \green { ( d ) } \: is \: correct$

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