Question

Solve the quadratic equation x2 – 3(x + 3)
= 0; Give your answer correct to two
significant figures.
​

Answer 1

Answer:

$\large\boxed{ \fcolorbox{violet}{lime}{your \: ans}}$

Step-by-step explanation:

$\bf\red{ \implies{x}^{2} - 3(x + 3) = 0 } \\ \\ \bf\blue{ \implies {x}^{2} - 3x + 3 = 0 } \\ \\ \bf\green{using \: quadratic \: formula \mapsto : } \\ \bf\red{ \boxed{ \bigstar \: x = \frac{ - b ±\sqrt{ {b}^{2} - 4ac} }{2a} \bigstar}} \\ \\ \bf\orange{ \implies \: here \: a = 1 \: b = - 3,\: c = 3} \\ \\ \bf\purple{ \implies x = \frac{ - ( - 3)±\sqrt{({ - 3}^{2}) - 4 \times 1 \times 3} }{2 \times 1} } \\ \\ \bf\green{ \implies \:x = \frac{3± \sqrt{9 - 12} }{2} } \\ \\ \bf\pink{ \implies \: x = \frac{3±\sqrt{ - 3} }{2} } \\ \\ \bf\orange{ \boxed{ \implies \: x = \frac{3±3i}{2} \: \: \: \: \: \: ( \therefore \: i = \sqrt{ - 1} \: comlex \: number) }} \\ \\ \bf\red{ \boxed{ \bigstar \implies \: x = \frac{3 + 3i}{2} \: or \: \frac{3 - 3i}{2} \: \: \: \bigstar }}$

$\large\boxed{ \fcolorbox{orange}{lime}{hope \:it \: help \: you }}$

Answer 2

This might help u... Observe the given picture carefully.....