Question

8x square-22x-21 using quadratic formula​

Answer 1

Answer:

$\star\large\mathcal{\underline{\underline{PLEASE \: }}}\large\mathcal\red{\underline{\underline{F}}}\large\mathcal\green{\underline{\underline{OLL}}}\large\mathcal\pink{\underline{\underline{OW \: }}}\large\mathcal\blue{\underline{\underline{ME}}}\star$

Step-by-step explanation:

$8x²-22x-21$

$Here , \: a = 8 , \: b = -22, \: c = -21$

$D = b²-4ac$

$=> (-22)²-4(8)(-21)$

$=> 484 + 672$

$=> 1156$

$now, \: Quadratic \: formula :$

$X= \frac{-b \: ±√D}{2a}$

$=> \frac{-(-22) \: ± \: √1156}{2(8)}$

$=> \frac{22+34}{8} , \: \frac{22 - 34}{8}$

$=> \frac{56}{8} \: , \: \frac{12}{8}$

$= 7 \: , \: \frac{ - 3}{2}$

$please \: like \: my \: answer \\ \&\\ mark \: me \: brainliest \: please \: :)))$

$\star\large\mathcal{\underline{\underline{PLEASE \: }}}\large\mathcal\red{\underline{\underline{F}}}\large\mathcal\green{\underline{\underline{OLL}}}\large\mathcal\pink{\underline{\underline{OW \: }}}\large\mathcal\blue{\underline{\underline{ME}}}\star$

$\star \: i \: hope \: you \: will \: understand \: me\star$