Question

first time x minus 3xsquare - 7 x + 4

Answer 1

x-3x^2 -7x +4
=>
3x^2-6x +4

then apply
[ -b +√(b^2-4ac)] /2a

here b= -6
a= 3
c= 4

[ 6+√(36-4×3×4)] /2×3

=>
[ 6 +√(36-48)]/6
=>
[ 6+ √-12]/6
=>
[ 6+2√-3] 6
=>
3(2+√-3)/6

=>( 2+√-3)/2 Ans

Answer 2

★ Here ★

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★ 3x² - 7x + 4

ax² + bx + c = 0

a + b + c = 0

•So one of its factor is (x -1)

•Here Put :-

x - c/a

x = 4 ÷ 3 (Put 4 in the place of c and 3 in the place of a)

f(x) = 3 (x -1) × (x - 4 ÷ 3)

= ( x -1 ) ( 3x - 4)

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Verification :-

f(x) = 3x² - 4x - 3x + 4

=3x² - 7x + 4

★ Proved :)

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Regards :)

★ Cybary ★

★ Be Brainly ★