Question

simplify 3x (4x-)+3andfind value for
​

Answer 1

Answer:

x = 3

Step-by-step explanation:

3x (-4x) + 3

-12x² + 3

-12x² = -3

x² = -3 + 12

x² = 9

x = √9

x = 3

I hope it will help you

Answer 2

$\huge{\underline{\mathfrak{Solution:-}}}$

★ To find the value of x

= 3x (- 4x ) + 3 = 0

= -3x × 4x + 3 = 0

= -12 x² + 3 = 0

• Divide both sides of the equation by - 3

= 4x² - 1 = 0

= 4x² = 1

= x² = $\dfrac{1}{4}$

• Take the square root of both sides, and now the root could be both in positive or negative form.

= x = $\sqrt{\dfrac{1}{4}}$

= x = ± $\dfrac{1}{2}$

Thus, the equation has 2 solutions:

• $\sf{x_{1}}$ = - $\dfrac{1}{2}$
• $\sf{x_{2}}$ = $\dfrac{1}{2}$

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