Math, asked by Krtin2173, 6 months ago

Find the product (4x-9)(4x+5)

Answers

Answered by singlamuskan107
0

Answer:

16x^2-16x-45 is answer.

Step-by-step explanation:

(4x-9)(4x+5)

16x^2+20x-36x-45

16x^2-16x-45

Answered by mysticd
3

 The \: product \: of \: (4x-9)(4x+5)

 = [4x + (-9 )]( 4x + 5 )

/* By algebraic identity */

 \boxed{ \pink{(x+a)(x+b) =  x^{2} + (a+b)x+ ab }}

 = (4x)^{2} + ( -9 + 5 )(4x) + (-9) \times 5

 = 16x^{2} + (-4)(4x) - 45

 = 16x^{2}  - 16x- 45

Therefore.,

\red {The \: product \: of \: (4x-9)(4x+5) }

 \green {= 16x^{2}  - 16x- 45 }

•••♪

Similar questions