Question

2 X²+4x-70=0 formula de bhaskara

Answer 1

A=2 B=4 C=-70

Formula resolutiva b ao quadrado - 4ac

○4×4-4×2×-70

○16-8×-70

○16+560

○576

Fórmula de bhaskara

+ ___

X=-4-|_|576

_________

2×2

+

X=-4 - 24

________

4

X=-4+24 =20 ÷4=5

________

4

X=-4-24=28÷4=-7

________

4

S={5;-7}