Question

solve x*2 +5x-300=0​

Answer 1

$\huge\bf\pink{\mid{\overline{\underline {Answer }}}\mid}$

${x}^{2} + 5x - 300 = 0 \\ {x}^{2} + 20 - 15 - 300 = 0 \\ x(x + 20) - 15(x + 20) = 0 \\ (x + 20)(x - 15) = 0 \\ x + 20 = 0 \: (or)x - 15 = 0 \\ x = - 20 \: (or) \: x = 15$

x=15 is the answers

Step-by-step explanation:

mark my answer to brainliest please... humble request...